Engineering:List of Historic Civil Engineering Landmarks

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The following is a list of Historic Civil Engineering Landmarks as designated by the American Society of Civil Engineers since it began the program in 1964. The designation is granted to projects, structures, and sites in the United States (National Historic Civil Engineering Landmarks) and the rest of the world (International Historic Civil Engineering Landmarks). As of 2019, there are over 280 landmarks that have been approved by the ASCE Board of Direction.[1][2][3][4] Sections or chapters of the American Society of Civil Engineers may also designate state or local landmarks within their areas; those landmarks are not listed here.

Ref# Year designated Name Image Built Location
Coordinates 		Region/state Country Category
1 1966 Bollman Truss Bridge 1869 Savage
[ ⚑ ] 39°8′5.4″N 76°49′30.3″W / 39.134833°N 76.825083°W / 39.134833; -76.825083 (Bollman Truss Bridge) 		Maryland United States bridges
2 1967 Bidwell Bar Bridge 1856 Oroville
[ ⚑ ] 39°32′14.8″N 121°27′15.6″W / 39.537444°N 121.454333°W / 39.537444; -121.454333 (Bidwell Bar Bridge) 		California United States bridges
3 1967 Erie Canal 1825 Hudson River to Lake Erie
[ ⚑ ] 43°2′35.6″N 76°1′20.2″W / 43.043222°N 76.022278°W / 43.043222; -76.022278 (Erie Canal) 		New York United States water transportation
4 1967 Middlesex Canal 1803 Middlesex County
[ ⚑ ] 42°30′21.4″N 71°9′25.8″W / 42.505944°N 71.157167°W / 42.505944; -71.157167 (Middlesex Canal) 		Massachusetts United States water transportation
5 1968 Central Pacific Railroad 1863–1869 Sacramento eastward
[ ⚑ ] 38°34′57″N 121°30′22.8″W / 38.5825°N 121.506333°W / 38.5825; -121.506333 (Central Pacific Railroad) 		California United States roads & rails
6 1968 Durango-Silverton Branch of the D&RGW RR 1882 Durango
[ ⚑ ] 37°35′27.7″N 107°46′41.6″W / 37.591028°N 107.778222°W / 37.591028; -107.778222 (Durango-Silverton Branch of the D&RGW RR) 		Colorado United States roads & rails
7 1968 Ellicott's Stone 1799 Mobile
[ ⚑ ] 30°59′52″N 88°1′21.1″W / 30.99778°N 88.022528°W / 30.99778; -88.022528 (Ellicott's Stone) 		Alabama United States surveys & maps
8 1968 Acequias of San Antonio 1718 San Antonio
[ ⚑ ] 29°19′57.1″N 98°27′41.1″W / 29.332528°N 98.461417°W / 29.332528; -98.461417 (Acequias of San Antonio) 		Texas United States water supply & control
9 1968 Joining of the Rails - Transcontinental Railroad 1869 Promontory
[ ⚑ ] 41°37′4.7″N 112°33′5.8″W / 41.617972°N 112.551611°W / 41.617972; -112.551611 (Joining of the Rails - Transcontinental Railroad) 		Utah United States roads & rails
10 1968 Wheeling Suspension Bridge 1849 Wheeling
[ ⚑ ] 40°4′12.8″N 80°43′36.7″W / 40.070222°N 80.726861°W / 40.070222; -80.726861 (Wheeling Suspension Bridge) 		West Virginia United States bridges
11 1969 Alvord Lake Bridge 1889 San Francisco
[ ⚑ ] 37°46′8.4″N 122°27′17.6″W / 37.769°N 122.454889°W / 37.769; -122.454889 (Alvord Lake Bridge) 		California United States bridges
12 1969 Charleston - Hamburg Railroad 1833 Charleston to Hamburg
[ ⚑ ] 32°47′22.9″N 79°56′15.8″W / 32.789694°N 79.937722°W / 32.789694; -79.937722 (Charleston - Hamburg Railroad) 		South Carolina United States roads & rails
13 1970 Ascutney Mill Dam 1834 Windsor
[ ⚑ ] 43°28′35″N 72°23′44.5″W / 43.47639°N 72.395694°W / 43.47639; -72.395694 (Ascutney Mill Dam) 		Vermont United States dams
14 1970 Bridgeport Covered Bridge 1862 Nevada County
[ ⚑ ] 39°17′34.2″N 121°11′41.7″W / 39.292833°N 121.194917°W / 39.292833; -121.194917 (Bridgeport Covered Bridge) 		California United States bridges
15 1970 Cornish–Windsor Covered Bridge 1866, rebuilt 1988 Windsor to Cornish
[ ⚑ ] 43°28′25.3″N 72°23′2.1″W / 43.473694°N 72.383917°W / 43.473694; -72.383917 (Cornish–Windsor Covered Bridge) 		Vermont and New Hampshire United States bridges
16 1970 Frankford Avenue Bridge 1697 Philadelphia
[ ⚑ ] 40°2′36.7″N 75°1′14″W / 40.043528°N 75.02056°W / 40.043528; -75.02056 (Frankford Avenue Bridge) 		Pennsylvania United States bridges
17 1970 Potowmack Canal and Locks 1799 Great Falls
[ ⚑ ] 38°59′25.3″N 77°14′58.1″W / 38.990361°N 77.249472°W / 38.990361; -77.249472 (Potowmack Canal and Locks) 		Virginia United States water transportation
18 1970 Theodore Roosevelt Dam & Salt River Project 1911 [ ⚑ ] 33°40′17.9″N 111°9′40.8″W / 33.671639°N 111.161333°W / 33.671639; -111.161333 (Theodore Roosevelt Dam & Salt River Project) Arizona United States water supply & control
19 1970 Union Canal Tunnel 1828 Lebanon
[ ⚑ ] 40°20′58.5″N 76°27′41″W / 40.349583°N 76.46139°W / 40.349583; -76.46139 (Union Canal Tunnel) 		Pennsylvania United States water transportation
20 1971 Bethlehem Waterworks 1761 Bethlehem
[ ⚑ ] 40°37′8.7″N 75°22′58.2″W / 40.619083°N 75.382833°W / 40.619083; -75.382833 (Bethlehem Waterworks) 		Pennsylvania United States water supply & control
21 1971 Druid Lake Dam 1871 Baltimore
[ ⚑ ] 39°19′7″N 76°37′53″W / 39.31861°N 76.63139°W / 39.31861; -76.63139 (Druid Lake Dam) 		Maryland United States dams
22 1971 Eads Bridge 1874 St. Louis
[ ⚑ ] 38°37′44″N 90°10′43.3″W / 38.62889°N 90.178694°W / 38.62889; -90.178694 (Eads Bridge) 		Missouri United States bridges
23 1971 First Owens River - Los Angeles Aqueduct 1913 Owens Valley
[ ⚑ ] 36°58′32.4″N 118°12′38″W / 36.975667°N 118.21056°W / 36.975667; -118.21056 (First Owens River - Los Angeles Aqueduct) 		California United States water supply & control
24 1971 Mormon Tabernacle 1867 Salt Lake City
[ ⚑ ] 40°46′13.6″N 111°53′35.3″W / 40.770444°N 111.893139°W / 40.770444; -111.893139 (Mormon Tabernacle) 		Utah United States buildings
25 1972 Cabin John Aqueduct 1863 Cabin John
[ ⚑ ] 38°58′22″N 77°8′54.9″W / 38.97278°N 77.148583°W / 38.97278; -77.148583 (Cabin John Aqueduct) 		Maryland United States water supply & control
26 1972 Chesbroughs Water Supply System Chicago 1869 Chicago
[ ⚑ ] 41°53′49.8″N 87°37′27.9″W / 41.897167°N 87.624417°W / 41.897167; -87.624417 (Chesbroughs Water Supply System Chicago) 		Illinois United States water supply & control
27 1972 Brooklyn Bridge 1883 New York City
[ ⚑ ] 40°42′22″N 73°59′48.8″W / 40.70611°N 73.996889°W / 40.70611; -73.996889 (Brooklyn Bridge) 		New York United States bridges
28 1972 Gunnison Tunnel 1909 Montrose
[ ⚑ ] 38°29′36″N 107°43′17″W / 38.49333°N 107.72139°W / 38.49333; -107.72139 (Gunnison Tunnel) 		Colorado United States tunnels
29 1972 Roebling's Delaware Aqueduct of the Delaware & Hudson Canal 1848, restored 1983 Lackawaxen to Minisink Ford
[ ⚑ ] 41°28′57.5″N 74°59′4.1″W / 41.482639°N 74.984472°W / 41.482639; -74.984472 (Roebling's Delaware Aqueduct of the Delaware & Hudson Canal) 		Pennsylvania & New York United States water transportation
30 1972 Miami Conservancy District 1922 near Dayton
[ ⚑ ] 39°45′49.2″N 84°11′29.2″W / 39.763667°N 84.191444°W / 39.763667; -84.191444 (Miami Conservancy District) 		Ohio United States water supply & control
31 1973 Buffalo Bill Dam 1910 Cody
[ ⚑ ] 44°30′5.3″N 109°10′59.4″W / 44.501472°N 109.183167°W / 44.501472; -109.183167 (Buffalo Bill Dam) 		Wyoming United States dams
32 1973 Cheesman Reservoir 1905 Southwest of Denver
[ ⚑ ] 39°12′27″N 105°16′20.1″W / 39.2075°N 105.27225°W / 39.2075; -105.27225 (Cheesman Reservoir) 		Colorado United States dams
33 1973 Embudo Stream Gauging Station 1889 Embudo
[ ⚑ ] 36°12′18.4″N 105°57′49.2″W / 36.205111°N 105.963667°W / 36.205111; -105.963667 (Embudo Stream Gauging Station) 		New Mexico United States water supply & control
34 1973 Ingalls Building 1903 Cincinnati
[ ⚑ ] 39°6′1″N 84°30′45.1″W / 39.10028°N 84.512528°W / 39.10028; -84.512528 (Ingalls Building) 		Ohio United States buildings
35 1973 Pelton Impulse Water Wheel 1878 Camptonville
[ ⚑ ] 39°27′7″N 121°2′55″W / 39.45194°N 121.04861°W / 39.45194; -121.04861 (Pelton Impulse Water Wheel) 		California United States power generation
36 1973 Starrucca Viaduct 1848 Lanesboro
[ ⚑ ] 41°57′51.3″N 75°35′0.6″W / 41.96425°N 75.5835°W / 41.96425; -75.5835 (Starrucca Viaduct) 		Pennsylvania United States bridges
37 1974 Kansas City Park and Boulevard System 1893 to 1915 Kansas City
[ ⚑ ] 39°4′57″N 94°33′18″W / 39.0825°N 94.555°W / 39.0825; -94.555 (Kansas City Park and Boulevard System) 		Missouri United States surveys & maps
38 1974 Milwaukee Metropolitan Sewage Treatment Plant, home of Milorganite[5] 1919 Milwaukee
[ ⚑ ] 43°1′21.3″N 87°53′57.3″W / 43.022583°N 87.89925°W / 43.022583; -87.89925 (Milwaukee Metropolitan Sewage Treatment Plant) 		Wisconsin United States water supply & control
39 1974 Philadelphia Municipal Water Supply 1801 Philadelphia
[ ⚑ ] 39°57′56″N 75°10′51″W / 39.96556°N 75.18083°W / 39.96556; -75.18083 (Philadelphia Municipal Water Supply) 		Pennsylvania United States water supply & control
40 1974 Stone Arch Bridge 1883 Minneapolis
[ ⚑ ] 44°58′50.8″N 93°15′12.3″W / 44.980778°N 93.253417°W / 44.980778; -93.253417 (Stone Arch Bridge) 		Minnesota United States bridges
41 1975 Castillo de San Marcos 1695 St. Augustine
[ ⚑ ] 29°53′52″N 81°18′41″W / 29.89778°N 81.31139°W / 29.89778; -81.31139 (Castillo de San Marcos) 		Florida United States buildings
42 1975 Croton Water Supply System 1842 New York City
[ ⚑ ] 41°0′42.5″N 73°52′36.4″W / 41.011806°N 73.876778°W / 41.011806; -73.876778 (Croton Water Supply System) 		New York United States water supply & control
43 1975 Folsom Hydroelectric Power System 1895 Folsom
[ ⚑ ] 38°40′46.6″N 121°10′37.2″W / 38.679611°N 121.177°W / 38.679611; -121.177 (Folsom Hydroelectric Power System) 		California United States power generation
44 1975 Granite Railway 1826 Quincy
[ ⚑ ] 42°14′44.6″N 71°2′9″W / 42.245722°N 71.03583°W / 42.245722; -71.03583 (Granite Railway) 		Massachusetts United States roads & rails
45 1975 Hoosac Tunnel 1875 Berkshire County
[ ⚑ ] 42°40′31.1″N 73°2′45.1″W / 42.675306°N 73.045861°W / 42.675306; -73.045861 (Hoosac Tunnel) 		Massachusetts United States tunnels
46 1975 Lawrence Experiment Station 1886 Lawrence
[ ⚑ ] 42°41′53.8″N 71°9′55.7″W / 42.698278°N 71.165472°W / 42.698278; -71.165472 (Lawrence Experiment Station) 		Massachusetts United States research & educational
47 1975 Marlette Lake Water System 1873 to 1887 Virginia City
[ ⚑ ] 39°13′9.5″N 119°47′20.1″W / 39.219306°N 119.788917°W / 39.219306; -119.788917 (Marlette Lake Water System) 		Nevada United States water supply & control
48 1975 Mount Washington Cog Railway 1869 Mount Washington
[ ⚑ ] 44°16′26″N 71°19′55″W / 44.27389°N 71.33194°W / 44.27389; -71.33194 (Mount Washington Cog Railway) 		New Hampshire United States roads & rails
49 1975 Smithfield Street Bridge 1883 Pittsburgh
[ ⚑ ] 40°26′5.4″N 80°0′7.7″W / 40.434833°N 80.002139°W / 40.434833; -80.002139 (Smithfield Street Bridge) 		Pennsylvania United States bridges
50 1975 Tunkhannock Viaduct 1915 Nicholson
[ ⚑ ] 41°37′34.2″N 75°46′34.4″W / 41.626167°N 75.776222°W / 41.626167; -75.776222 (Tunkhannock Viaduct) 		Pennsylvania United States bridges
51 1976 Crozet's Blue Ridge Tunnel 1858 Waynesboro
[ ⚑ ] 38°2′3.1″N 78°51′28.4″W / 38.034194°N 78.857889°W / 38.034194; -78.857889 (Crozet's Blue Ridge Tunnel) 		Virginia United States tunnels
52 1976 Cumbres and Toltec Scenic Railroad 1880 Chama to Antonito
[ ⚑ ] 36°59′42″N 106°17′51.1″W / 36.995°N 106.297528°W / 36.995; -106.297528 (Cumbres and Toltec Scenic Railroad) 		New Mexico and Colorado United States roads & rails
53 1976 Elephant Butte Dam 1916 Truth or Consequences
[ ⚑ ] 33°9′14.9″N 107°11′31.3″W / 33.154139°N 107.192028°W / 33.154139; -107.192028 (Elephant Butte Dam) 		New Mexico United States dams
54 1976 First Concrete Pavement 1893 Bellefontaine
[ ⚑ ] 40°21′37.5″N 83°45′33.6″W / 40.360417°N 83.759333°W / 40.360417; -83.759333 (First Concrete Pavement) 		Ohio United States roads & rails
55 1976 International Boundary Marker No. 1[6] 1855 Doña Ana County
[ ⚑ ] 31°47′2″N 106°31′47.1″W / 31.78389°N 106.52975°W / 31.78389; -106.52975 (International Boundary Marker No. 1) 		New Mexico United States surveys & maps
56 1976 King's Road 1766 to 1775 New Smyrna
[ ⚑ ] 29°38′23.4″N 81°16′50.3″W / 29.639833°N 81.280639°W / 29.639833; -81.280639 (King's Road) 		Florida United States roads & rails
57 1976 National Road 1811–1839 Cumberland to Vandalia
[ ⚑ ] 39°57′38.7″N 82°27′2″W / 39.96075°N 82.45056°W / 39.96075; -82.45056 (National Road) 		Maryland to Illinois United States roads & rails
58 1977 Charlestown Naval Dry Dock 1833 Boston
[ ⚑ ] 42°22′23.7″N 71°3′19.3″W / 42.37325°N 71.055361°W / 42.37325; -71.055361 (Charlestown Naval Dry Dock) 		Massachusetts United States water transportation
59 1977 City Plan of Savannah 1733 Savannah
[ ⚑ ] 32°4′32″N 81°5′31″W / 32.07556°N 81.09194°W / 32.07556; -81.09194 (City Plan of Savannah) 		Georgia United States surveys & maps
60 1977 Great Falls Raceway and Power System 1800 Paterson
[ ⚑ ] 40°54′55.1″N 74°10′52.1″W / 40.915306°N 74.181139°W / 40.915306; -74.181139 (Great Falls Raceway and Power System) 		New Jersey United States power generation
61 1977 First New York Subway 1904 New York City
[ ⚑ ] 40°42′45.3″N 74°0′24.2″W / 40.712583°N 74.006722°W / 40.712583; -74.006722 (First New York Subway) 		New York United States roads & rails
62 1977 Mason–Dixon line 1767 [ ⚑ ] 39°43′16.1″N 80°7′5.3″W / 39.721139°N 80.118139°W / 39.721139; -80.118139 (Mason–Dixon line) Maryland & Pennsylvania United States surveys & maps
63 1977 Minot's Ledge Lighthouse 1860 off Scituate
[ ⚑ ] 42°16′11″N 70°45′32.9″W / 42.26972°N 70.759139°W / 42.26972; -70.759139 (Minot's Ledge Lighthouse) 		Massachusetts United States water transportation
64 1977 Mullan Road 1862 Walla Walla
[ ⚑ ] 46°46′8.3″N 118°12′22.6″W / 46.768972°N 118.206278°W / 46.768972; -118.206278 (Mullan Road) 		Washington (state) United States roads & rails
65 1977 Dry Dock No 1 Norfolk Naval Shipyard 1833 Portsmouth
[ ⚑ ] 36°49′14″N 76°17′35″W / 36.82056°N 76.29306°W / 36.82056; -76.29306 (Gosport Naval Dry Docks) 		Virginia United States water transportation
66 1977 Reversal of the Chicago River 1900 Chicago
[ ⚑ ] 41°42′18″N 87°56′2″W / 41.705°N 87.93389°W / 41.705; -87.93389 (Reversal of the Chicago River) 		Illinois United States water transportation
67 1977 Vulcan Street Plant 1882 Appleton
[ ⚑ ] 44°15′29.2″N 88°23′50.2″W / 44.258111°N 88.397278°W / 44.258111; -88.397278 (Vulcan Street Plant) 		Wisconsin United States power generation
68 1977 William E. Ward House 1876 Rye Brook
[ ⚑ ] 41°1′32.5″N 73°40′3.1″W / 41.025694°N 73.667528°W / 41.025694; -73.667528 (William E. Ward House) 		New York United States buildings
69 1978 Boston Subway 1897 Boston
[ ⚑ ] 42°21′23.8″N 71°3′43.6″W / 42.356611°N 71.062111°W / 42.356611; -71.062111 (Boston Subway) 		Massachusetts United States roads & rails
70 1978 Dunlap's Creek Bridge 1839 Brownsville
[ ⚑ ] 40°1′17.2″N 79°53′17.2″W / 40.021444°N 79.888111°W / 40.021444; -79.888111 (Dunlap's Creek Bridge) 		Pennsylvania United States bridges
71 1978 Hudson and Manhattan Railroad Tunnel 1908 Jersey City to New York City
[ ⚑ ] 40°43′56.7″N 74°1′11.6″W / 40.732417°N 74.019889°W / 40.732417; -74.019889 (Hudson and Manhattan Railroad Tunnel) 		New Jersey & New York United States tunnels
72 1978 Newark International Airport 1928 Newark
[ ⚑ ] 40°41′22.2″N 74°10′28.2″W / 40.6895°N 74.1745°W / 40.6895; -74.1745 (Newark International Airport) 		New Jersey United States aviation
73 1978 United States Military Academy 1813 West Point
[ ⚑ ] 41°23′34.8″N 73°57′28.8″W / 41.393°N 73.958°W / 41.393; -73.958 (United States Military Academy) 		New York United States research & educational
74 1979 Cleveland Hopkins Airport 1925 Cleveland
[ ⚑ ] 41°24′45″N 81°50′53″W / 41.4125°N 81.84806°W / 41.4125; -81.84806 (Cleveland Hopkins Airport) 		Ohio United States aviation
75 1979 Fink Deck Truss Bridge 1870 Lynchburg
[ ⚑ ] 37°26′24.3″N 79°9′56″W / 37.440083°N 79.16556°W / 37.440083; -79.16556 (Fink Deck Truss Bridge) 		Virginia United States bridges
76 1979 Fink Through Truss Bridge 1858 Hamden
[ ⚑ ] 40°36′14.3″N 74°54′8.1″W / 40.603972°N 74.90225°W / 40.603972; -74.90225 (Fink Through Truss Bridge) 		New Jersey United States bridges
77 1979 Iron Bridge 1779 Ironbridge
[ ⚑ ] 52°37′38.4″N 2°29′7.6″W / 52.627333°N 2.485444°W / 52.627333; -2.485444 (Iron Bridge) 		West Midlands England bridges
78 1979 Moffat Tunnel 1928 Winter Park
[ ⚑ ] 39°53′37.5″N 105°42′41.3″W / 39.89375°N 105.711472°W / 39.89375; -105.711472 (Moffat Tunnel) 		Colorado United States tunnels
79 1979 Rockville Bridge 1902 Harrisburg
[ ⚑ ] 40°19′59.9″N 76°54′38.8″W / 40.333306°N 76.910778°W / 40.333306; -76.910778 (Rockville Bridge) 		Pennsylvania United States bridges
80 1980 Goodyear Airdock 1929 Akron
[ ⚑ ] 41°1′54.9″N 81°28′14.6″W / 41.031917°N 81.470722°W / 41.031917; -81.470722 (Goodyear Airdock) 		Ohio United States aviation
81 1980 Hydraulic-Inclined Plane System of the Morris Canal File:Morris Canal Plane 7 West from HAER (cropped).tiff 1831 Waterloo Village
[ ⚑ ] 40°54′55.2″N 74°21′23.8″W / 40.915333°N 74.356611°W / 40.915333; -74.356611 (Hydraulic-Inclined Plane System of the Morris Canal) 		New Jersey United States water transportation
82 1981 Borden Base Line 1831 Hatfield
[ ⚑ ] 42°25′33.7″N 72°37′9″W / 42.426028°N 72.61917°W / 42.426028; -72.61917 (Borden Base Line) 		Massachusetts United States surveys & maps
83 1981 Chain of Rocks Water Purification Plant 1904 St. Louis
[ ⚑ ] 38°45′18.5″N 90°11′11.6″W / 38.755139°N 90.186556°W / 38.755139; -90.186556 (Chain of Rocks Water Purification Plant) 		Missouri United States water supply & control
84 1981 Charles River Basin Project 1910 Boston
[ ⚑ ] 42°22′3.8″N 71°4′12.8″W / 42.367722°N 71.070222°W / 42.367722; -71.070222 (Charles River Basin Project) 		Massachusetts United States water supply & control
85 1981 Cortland Street Drawbridge 1902 Chicago
[ ⚑ ] 41°55′1.1″N 87°39′51.4″W / 41.916972°N 87.664278°W / 41.916972; -87.664278 (Cortland Street Drawbridge) 		Illinois United States bridges
86 1981 George Washington Bridge 1931 Fort Lee to New York City
[ ⚑ ] 40°51′6.1″N 73°57′9.7″W / 40.851694°N 73.952694°W / 40.851694; -73.952694 (George Washington Bridge) 		New Jersey & New York United States bridges
87 1981 Louisville Water Works 1875 to 1896 Louisville
[ ⚑ ] 38°16′50″N 85°42′4.3″W / 38.28056°N 85.701194°W / 38.28056; -85.701194 (Louisville Water Works) 		Kentucky United States water supply & control
88 1981 Montgomery Bell's Tunnel 1818 Cheatham County
[ ⚑ ] 36°8′48.5″N 87°7′19.3″W / 36.146806°N 87.122028°W / 36.146806; -87.122028 (Montgomery Bell's Tunnel) 		Tennessee United States tunnels
89 1981 Snoqualmie Falls Cavity Generating Station 1899 Snoqualmie
[ ⚑ ] 47°32′39.5″N 121°50′29.3″W / 47.544306°N 121.841472°W / 47.544306; -121.841472 (Snoqualmie Falls Cavity Generating Station) 		Washington (state) United States power generation
90 1981 Union Station 1894 St. Louis
[ ⚑ ] 38°37′41.2″N 90°12′28.8″W / 38.628111°N 90.208°W / 38.628111; -90.208 (Union Station) 		Missouri United States roads & rails
91 1981 Washington Monument 1885 Washington
[ ⚑ ] 38°53′22.1″N 77°2′6.9″W / 38.889472°N 77.03525°W / 38.889472; -77.03525 (Washington Monument) 		District of Columbia United States buildings
92 1981 Whipple Truss Bridge 1855 Schenectady
[ ⚑ ] 42°49′5.2″N 73°55′27″W / 42.818111°N 73.92417°W / 42.818111; -73.92417 (Whipple Truss Bridge) 		New York United States bridges
93 1982 Carrollton Viaduct 1829 Baltimore
[ ⚑ ] 39°16′31.5″N 76°39′18″W / 39.275417°N 76.655°W / 39.275417; -76.655 (Carrollton Viaduct) 		Maryland United States bridges
94 1982 Detroit-Windsor Tunnel 1930 Detroit
[ ⚑ ] 42°19′28″N 83°2′25.4″W / 42.32444°N 83.040389°W / 42.32444; -83.040389 (Detroit-Windsor Tunnel) 		Michigan United States tunnels
95 1982 Eads South Pass Navigation Works 1879 Port Eads
[ ⚑ ] 28°59′50″N 89°8′38″W / 28.99722°N 89.14389°W / 28.99722; -89.14389 (Eads South Pass Navigation Works) 		Louisiana United States water transportation
96 1982 Holland Tunnel 1927 Jersey City to New York City
[ ⚑ ] 40°43′38.9″N 74°1′16″W / 40.727472°N 74.02111°W / 40.727472; -74.02111 (Holland Tunnel) 		New Jersey & New York United States tunnels
97 1982 John A. Roebling Suspension Bridge 1866 Cincinnati
[ ⚑ ] 39°5′34.8″N 84°30′35.6″W / 39.093°N 84.509889°W / 39.093; -84.509889 (John A. Roebling Suspension Bridge) 		Ohio United States bridges
98 1982 Kinzua Railway Viaduct 1882 McKean County
[ ⚑ ] 41°45′47.3″N 78°35′21.1″W / 41.763139°N 78.589194°W / 41.763139; -78.589194 (Kinzua Railway Viaduct) 		Pennsylvania United States bridges
99 1982 Rogue River Bridge 1931 Gold Beach
[ ⚑ ] 42°25′40.5″N 124°24′47.5″W / 42.427917°N 124.413194°W / 42.427917; -124.413194 (Rogue River Bridge) 		Oregon United States bridges
100 1982 Second Street Bridge 1886 Allegan
[ ⚑ ] 42°31′32.7″N 85°50′54.6″W / 42.52575°N 85.8485°W / 42.52575; -85.8485 (Second Street Bridge) 		Michigan United States bridges
101 1982 Watertown Arsenal 1859 Watertown
[ ⚑ ] 42°21′44″N 71°9′58″W / 42.36222°N 71.16611°W / 42.36222; -71.16611 (Watertown Arsenal) 		Massachusetts United States research & educational
102 1983 Atlantic City Convention Hall 1929 Atlantic City
[ ⚑ ] 39°21′18″N 74°26′19.1″W / 39.355°N 74.438639°W / 39.355; -74.438639 (Atlantic City Convention Hall) 		New Jersey United States buildings
103 1983 Bailey Island Bridge 1928 Harpswell
[ ⚑ ] 43°44′57.1″N 69°59′19.3″W / 43.749194°N 69.988694°W / 43.749194; -69.988694 (Bailey Island Bridge) 		Maine United States bridges
104 1983 Blenheim Bridge 1855 North Blenheim
[ ⚑ ] 42°28′18.4″N 74°26′29.4″W / 42.471778°N 74.4415°W / 42.471778; -74.4415 (Blenheim Bridge) 		New York United States bridges
105 1983 Iron Building of the U.S. Army Arsenal 1859 Watervliet
[ ⚑ ] 42°43′5.9″N 73°42′14.5″W / 42.718306°N 73.704028°W / 42.718306; -73.704028 (Iron Building of the U.S. Army Arsenal) 		New York United States buildings
106 1983 Ohio Canal System 1848 Akron
[ ⚑ ] 40°52′39.2″N 81°35′1.4″W / 40.877556°N 81.583722°W / 40.877556; -81.583722 (Ohio Canal System) 		Ohio United States water transportation
107 1983 Peavey–Haglin Experimental Concrete Grain Elevator 1900 St. Louis Park
[ ⚑ ] 44°56′32.7″N 93°20′42.8″W / 44.942417°N 93.345222°W / 44.942417; -93.345222 (Peavey–Haglin Experimental Concrete Grain Elevator) 		Minnesota United States buildings
108 1983 Sault Ste. Marie Hydroelectric Complex 1902 Sault Ste. Marie
[ ⚑ ] 46°29′50.8″N 84°19′55.7″W / 46.497444°N 84.332139°W / 46.497444; -84.332139 (Sault Ste. Marie Hydroelectric Complex) 		Michigan United States power generation
109 1984 Columbia River Scenic Highway 1922 Portland, Oregon
[ ⚑ ] 45°39′19.3″N 121°54′13.2″W / 45.655361°N 121.903667°W / 45.655361; -121.903667 (Columbia River Scenic Highway) 		Oregon United States roads & rails
110 1984 Columbia-Wrightsville Bridge 1930 Columbia
[ ⚑ ] 40°1′42.4″N 76°31′5.6″W / 40.028444°N 76.518222°W / 40.028444; -76.518222 (Columbia-Wrightsville Bridge) 		Pennsylvania United States bridges
111 1984 Golden Gate Bridge 1937 San Francisco
[ ⚑ ] 37°49′11.7″N 122°28′42.7″W / 37.819917°N 122.478528°W / 37.819917; -122.478528 (Golden Gate Bridge) 		California United States bridges
112 1984 Hoover Dam 1935 Boulder City
[ ⚑ ] 36°0′57.7″N 114°44′14.8″W / 36.016028°N 114.737444°W / 36.016028; -114.737444 (Hoover Dam) 		Nevada & Arizona United States dams
113 1984 Lowell Waterpower System 1821 Lowell
[ ⚑ ] 42°38′48.5″N 71°18′41.6″W / 42.646806°N 71.311556°W / 42.646806; -71.311556 (Lowell Waterpower System) 		Massachusetts United States power generation
114 1984 Panama Canal 1914 Colón to Panama City [ ⚑ ] 9°7′2.2″N 79°43′7.6″W / 9.117278°N 79.718778°W / 9.117278; -79.718778 (Panama Canal) Panama water transportation
115 1984 Rocky River Pumped Storage Hydro-Plant 1925 New Milford
[ ⚑ ] 41°34′49.7″N 73°26′13.2″W / 41.580472°N 73.437°W / 41.580472; -73.437 (Rocky River Pumped Storage Hydro-Plant) 		Connecticut United States power generation
116 1985 Bayonne Bridge 1931 Bayonne to Staten Island
[ ⚑ ] 40°38′29.8″N 74°8′31.6″W / 40.641611°N 74.142111°W / 40.641611; -74.142111 (Bayonne Bridge) 		New Jersey & New York United States bridges
117 1985 Beginning Point of the U.S. Public Land Survey 1785 Liverpool
[ ⚑ ] 40°38′19.7″N 80°31′8.4″W / 40.638806°N 80.519°W / 40.638806; -80.519 (Beginning Point of the U.S. Public Land Survey) 		Ohio United States surveys & maps
118 1985 Cape Cod Canal 1914 Barnstable County
[ ⚑ ] 41°45′51.1″N 70°34′6.3″W / 41.764194°N 70.568417°W / 41.764194; -70.568417 (Cape Cod Canal) 		Massachusetts United States water transportation
119 1985 Chesapeake and Delaware Canal 1828 (rebuilt 1927) New Castle
[ ⚑ ] 39°32′34″N 75°43′14″W / 39.54278°N 75.72056°W / 39.54278; -75.72056 (Chesapeake and Delaware Canal) 		Delaware United States water transportation
120 1985 Davis Island Lock and Dam 1885 Pittsburgh
[ ⚑ ] 40°29′35″N 80°3′56″W / 40.49306°N 80.06556°W / 40.49306; -80.06556 (Davis Island Lock and Dam) 		Pennsylvania United States water transportation
121 1985 Forth Railway Bridge 1890 North Queensferry to South Queensferry
[ ⚑ ] 56°0′1.5″N 3°23′19.4″W / 56.000417°N 3.388722°W / 56.000417; -3.388722 (Forth Railway Bridge) 		Scotland bridges
122 1985 Going-to-the-Sun Road 1932 Glacier National Park
[ ⚑ ] 48°41′42″N 113°49′1.2″W / 48.695°N 113.817°W / 48.695; -113.817 (Going-to-the-Sun Road) 		Montana United States roads & rails
123 1985 High Bridge 1877 Jessamine & Mercer Counties
[ ⚑ ] 37°49′1.7″N 84°43′12.4″W / 37.817139°N 84.720111°W / 37.817139; -84.720111 (High Bridge) 		Kentucky United States bridges
124 1985 Statue of Liberty 1886 New York Harbor
[ ⚑ ] 40°41′21.5″N 74°2′40.4″W / 40.689306°N 74.044556°W / 40.689306; -74.044556 (Statue of Liberty) 		New York[7] United States buildings
125 1986 White River Concrete Arch Bridge 1930 Cotter
[ ⚑ ] 36°16′2″N 92°32′39″W / 36.26722°N 92.54417°W / 36.26722; -92.54417 (White River Concrete Arch Bridge) 		Arkansas United States bridges
126 1986 Cranetown Triangulation Site 1817 Cedar Grove
[ ⚑ ] 40°49′43.9″N 74°13′27.1″W / 40.828861°N 74.224194°W / 40.828861; -74.224194 (Cranetown Triangulation Site) 		New Jersey United States surveys & maps
127 1986 Eiffel Tower 1889 Paris
[ ⚑ ] 48°51′30.2″N 2°17′40.2″E / 48.858389°N 2.2945°E / 48.858389; 2.2945 (Eiffel Tower) 		Île-de-France France buildings
128 1986 El Camino Real Error creating thumbnail: Unable to save thumbnail to destination 1598-1800s Santa Fe and Mexico City
[ ⚑ ] 34°3′38.7″N 106°53′36.6″W / 34.06075°N 106.8935°W / 34.06075; -106.8935 (El Camino Real) 		New Mexico United States and Mexico roads & rails
129 1986 El Camino Real (The Royal Road) Eastern Branch from 16th century San Antonio
[ ⚑ ] 29°26′45.8″N 98°30′12.3″W / 29.446056°N 98.503417°W / 29.446056; -98.503417 (El Camino Real (The Royal Road) Eastern Branch) 		Texas United States roads & rails
130 1986 New Castle Ice Harbor 1974 New Castle
[ ⚑ ] 39°39′28″N 75°33′39″W / 39.65778°N 75.56083°W / 39.65778; -75.56083 (New Castle Ice Harbor) 		Delaware United States water transportation
131 1986 Norris Dam 1936 Knoxville
[ ⚑ ] 36°13′28″N 84°5′31.5″W / 36.22444°N 84.092083°W / 36.22444; -84.092083 (Norris Dam) 		Tennessee United States dams
132 1986 San Francisco–Oakland Bay Bridge 1937 San Francisco to Oakland
[ ⚑ ] 37°47′53.6″N 122°22′40.7″W / 37.798222°N 122.377972°W / 37.798222; -122.377972 (San Francisco–Oakland Bay Bridge) 		California United States bridges
133 1986 Sewall's Bridge 1761 (rebuilt 1934) York
[ ⚑ ] 43°8′10.2″N 70°39′38.3″W / 43.136167°N 70.660639°W / 43.136167; -70.660639 (Sewall's Bridge) 		Maine United States bridges
134 1986 Triborough Bridge Project 1936 New York City
[ ⚑ ] 40°47′26.6″N 73°55′33.2″W / 40.790722°N 73.925889°W / 40.790722; -73.925889 (Triborough Bridge Project) 		New York United States bridges
135 1986 U.S. Army Corps of Engineers Waterways Exp. Station 1929 Vicksburg
[ ⚑ ] 32°18′4.2″N 90°52′18″W / 32.301167°N 90.87167°W / 32.301167; -90.87167 (U.S. Army Corps of Engineers Waterways Exp. Station) 		Mississippi United States research & educational
136 1986 U.S. Capitol 1793, rebuilt 1863 Washington
[ ⚑ ] 38°53′23″N 77°0′33″W / 38.88972°N 77.00917°W / 38.88972; -77.00917 (U.S. Capitol) 		District of Columbia United States buildings
137 1986 Zuiderzee Enclosure Dam 1927 to 1932 Zaandam
[ ⚑ ] 52°59′37.5″N 5°9′19.1″E / 52.99375°N 5.155306°E / 52.99375; 5.155306 (Zuiderzee Enclosure Dam) 		North Holland Netherlands water supply & control
138 1987 Allegheny Portage Railroad 1834 Hollidaysburg
[ ⚑ ] 40°27′23″N 78°33′3.4″W / 40.45639°N 78.550944°W / 40.45639; -78.550944 (Allegheny Portage Railroad) 		Pennsylvania United States roads & rails
139 1987 Bonneville Dam, Columbia River System 1937 Bonneville
[ ⚑ ] 45°38′39.7″N 121°56′26.7″W / 45.644361°N 121.94075°W / 45.644361; -121.94075 (Bonneville Dam, Columbia River System) 		Oregon United States power generation
140 1987 Bridges of Keeseville 1843, 1878, 1888 Keeseville
[ ⚑ ] 44°30′13.2″N 73°28′57.3″W / 44.503667°N 73.482583°W / 44.503667; -73.482583 (Bridges of Keeseville) 		New York United States bridges
141 1987 Dismal Swamp Canal 1805 Chesapeake to South Mills
[ ⚑ ] 36°35′34.1″N 76°23′5.4″W / 36.592806°N 76.384833°W / 36.592806; -76.384833 (Dismal Swamp Canal) 		Virginia to North Carolina United States water transportation
142 1987 Houston Ship Channel 1837–present Houston
[ ⚑ ] 29°44′35.8″N 95°6′16.5″W / 29.743278°N 95.104583°W / 29.743278; -95.104583 (Houston Ship Channel) 		Texas United States water transportation
143 1987 Kamehameha V Post Office 1871 Honolulu
[ ⚑ ] 21°18′34.6″N 157°51′47.4″W / 21.309611°N 157.863167°W / 21.309611; -157.863167 (Kamehameha V Post Office) 		Hawaii United States buildings
144 1987 Frisco Bridge 1892 Memphis
[ ⚑ ] 35°7′43.6″N 90°4′34.7″W / 35.128778°N 90.076306°W / 35.128778; -90.076306 (Frisco Bridge) 		Tennessee & Arkansas United States bridges
145 1987 Quebec Bridge 1917 Quebec City
[ ⚑ ] 46°44′45.6″N 71°17′17.3″W / 46.746°N 71.288139°W / 46.746; -71.288139 (Quebec Bridge) 		Quebec Canada bridges
146 1988 Belle Fourche Dam 1911 Belle Fourche
[ ⚑ ] 44°43′51.3″N 103°40′36.8″W / 44.730917°N 103.676889°W / 44.730917; -103.676889 (Belle Fourche Dam) 		South Dakota United States dams
147 1988 École Nationale des Ponts et Chaussées 1747 Paris
[ ⚑ ] 48°51′20.9″N 2°19′49.9″E / 48.855806°N 2.330528°E / 48.855806; 2.330528 (École Nationale des Ponts et Chaussées) 		Île-de-France France research & educational
148 1988 Keokuk Hydro-Power System 1913 Keokuk
[ ⚑ ] 40°23′56.6″N 91°21′49″W / 40.399056°N 91.36361°W / 40.399056; -91.36361 (Keokuk Hydro-Power System) 		Iowa United States power generation
149 1988 Pennsylvania Turnpike 1940 [ ⚑ ] 40°1′49.9″N 78°29′33.6″W / 40.030528°N 78.492667°W / 40.030528; -78.492667 (Pennsylvania Turnpike) Pennsylvania United States roads & rails
150 1988 River des Peres Sewerage & Drainage Works 1924 to 1931 St. Louis
[ ⚑ ] 38°39′42.3″N 90°18′33.9″W / 38.66175°N 90.309417°W / 38.66175; -90.309417 (River des Peres Sewerage & Drainage Works) 		Missouri United States water supply & control
151 1988 Sydney Harbour Bridge 1932 Sydney
[ ⚑ ] 33°51′8.1″S 151°12′38.6″E / 33.85225°S 151.210722°E / -33.85225; 151.210722 (Sydney Harbour Bridge) 		New South Wales Australia bridges
152 1989 Royal Colonial Boundary of 1665 1728–1819 Middlesboro
[ ⚑ ] 36°36′2.9″N 83°40′31.5″W / 36.600806°N 83.675417°W / 36.600806; -83.675417 (Royal Colonial Boundary of 1665) 		Kentucky United States surveys & maps
153 1989 Zhaozhou Bridge 605 AD Zhaoxian
[ ⚑ ] 37°43′12.9″N 114°45′47.7″E / 37.72025°N 114.76325°E / 37.72025; 114.76325 (Zhaozhou Bridge) 		Hebei China bridges
154 1990 Fort Peck Dam 1940 Fort Peck
[ ⚑ ] 48°0′10.1″N 106°24′58″W / 48.002806°N 106.41611°W / 48.002806; -106.41611 (Fort Peck Dam) 		Montana United States dams
155 1990 Maria Pia Bridge 1877 Oporto
[ ⚑ ] 41°8′23.4″N 8°35′49.6″W / 41.139833°N 8.597111°W / 41.139833; -8.597111 (Maria Pia Bridge) 		Norte Portugal bridges
156 1990 Salginatobel Bridge 1930 Grisons
[ ⚑ ] 46°58′54.4″N 9°43′5.1″E / 46.981778°N 9.718083°E / 46.981778; 9.718083 (Salginatobel Bridge) 		Graubünden Switzerland bridges
157 1991 Eddystone Lighthouse 1882 off Plymouth
[ ⚑ ] 50°11′2″N 4°16′5.1″W / 50.18389°N 4.268083°W / 50.18389; -4.268083 (Eddystone Lighthouse) 		England water transportation
158 1991 Fritz Engineering Laboratory 1910 Bethlehem
[ ⚑ ] 40°36′28.9″N 75°22′34.3″W / 40.608028°N 75.376194°W / 40.608028; -75.376194 (Fritz Engineering Laboratory) 		Pennsylvania United States research & educational
159 1991 St. Clair Tunnel 1891 Port Huron
[ ⚑ ] 42°57′32.4″N 82°25′22.2″W / 42.959°N 82.422833°W / 42.959; -82.422833 (St. Clair Tunnel) 		Michigan United States tunnels
160 1991 Thames Tunnel 1843 London
[ ⚑ ] 51°30′12.7″N 0°3′13.3″W / 51.503528°N 0.053694°W / 51.503528; -0.053694 (Thames Tunnel) 		England tunnels
161 1992 Acquedotto Traiano-Paolo 110 AD Rome
[ ⚑ ] 42°3′12.9″N 12°20′18.7″E / 42.053583°N 12.338528°E / 42.053583; 12.338528 (Acquedotto Traiano-Paolo) 		Lazio Italy water supply & control
162 1992 Niagara Falls Suspension Bridge 1849, 1855, 1883, 1898, 1941 Niagara Gorge
[ ⚑ ] 43°5′24.8″N 79°4′3.4″W / 43.090222°N 79.067611°W / 43.090222; -79.067611 (Niagara Falls Suspension Bridge) 		Ontario and New York Canada and United States bridges
163 1992 Duck Creek Aqueduct 1846 Metamora
[ ⚑ ] 39°26′46.1″N 85°7′48″W / 39.446139°N 85.13°W / 39.446139; -85.13 (Duck Creek Aqueduct) 		Indiana United States water supply & control
164 1992 Hohokam Canal System 600 - 1450 AD Maricopa County
[ ⚑ ] 33°26′43.8″N 111°48′56.2″W / 33.4455°N 111.815611°W / 33.4455; -111.815611 (Hohokam Canal System) 		Arizona United States water supply & control
165 1992 San Jacinto Monument 1939 Houston
[ ⚑ ] 29°44′59.5″N 95°4′50.6″W / 29.749861°N 95.080722°W / 29.749861; -95.080722 (San Jacinto Monument) 		Texas United States buildings
166 1993 Blimp Hangars 1942 Tustin
[ ⚑ ] 33°42′10.8″N 117°49′26.3″W / 33.703°N 117.823972°W / 33.703; -117.823972 (Blimp Hangars) 		California United States aviation
167 1993 Denison Dam 1943 Denison
[ ⚑ ] 33°49′52.6″N 96°34′16″W / 33.831278°N 96.57111°W / 33.831278; -96.57111 (Denison Dam) 		Texas & Oklahoma United States dams
168 1993 Hanford B Reactor 1944 Richland
[ ⚑ ] 46°37′49.1″N 119°38′50.3″W / 46.630306°N 119.647306°W / 46.630306; -119.647306 (Hanford B Reactor) 		Washington (state) United States power generation
169 1993 Stevens Pass Railroad Tunnels & Switchback System 1900 Stevens Pass
[ ⚑ ] 47°44′52.4″N 121°7′26.3″W / 47.747889°N 121.123972°W / 47.747889; -121.123972 (Stevens Pass Railroad Tunnels & Switchback System) 		Washington (state) United States tunnels
170 1994 Colorado River Aqueduct 1933–1941 Blythe
[ ⚑ ] 34°17′23.6″N 114°10′19.5″W / 34.289889°N 114.172083°W / 34.289889; -114.172083 (Colorado River Aqueduct) 		California United States water supply & control
171 1994 Kavanagh Building 1936 Buenos Aires
[ ⚑ ] 34°35′43.7″S 58°22′28.9″W / 34.595472°S 58.374694°W / -34.595472; -58.374694 (Kavanagh Building) 		Argentina buildings
172 1994 Missouri River Bridges 1926 Chamberlain
[ ⚑ ] 43°48′42.1″N 99°20′16.1″W / 43.811694°N 99.337806°W / 43.811694; -99.337806 (Missouri River Bridges) 		South Dakota United States bridges
173 1995 Red Hill Underground Fuel Storage Facility 1943 Honolulu
[ ⚑ ] 21°22′18″N 157°53′44″W / 21.37167°N 157.89556°W / 21.37167; -157.89556 (Red Hill Underground Fuel Storage Facility) 		Hawaii United States tunnels
174 1994 Viaducto del Malleco 1890 Malleco River
[ ⚑ ] 37°57′47″S 72°26′20″W / 37.96306°S 72.43889°W / -37.96306; -72.43889 (Viaducto del Malleco) 		Central Chile Chile bridges
175 1994 White Pass and Yukon Route 1900 Whitehorse, Yukon to Skagway, Alaska
[ ⚑ ] 59°37′28″N 135°8′18.3″W / 59.62444°N 135.138417°W / 59.62444; -135.138417 (White Pass and Yukon Route) 		Yukon Territory to Alaska Canada & United States roads & rails
176 1995 Alaska Highway 1942 Dawson Creek to Delta Junction
[ ⚑ ] 59°54′39.6″N 131°33′20.6″W / 59.911°N 131.555722°W / 59.911; -131.555722 (Alaska Highway) 		British Columbia to Alaska Canada & United States roads & rails
177 1995 Banaue Rice Terraces 100 BC Banaue
[ ⚑ ] 16°55′57.4″N 121°3′30.1″E / 16.932611°N 121.058361°E / 16.932611; 121.058361 (Banaue Rice Terraces) 		Ifugao Philippines water supply & control
178 1995 Acueducto de Queretaro 1738 Querétaro
[ ⚑ ] 20°35′48″N 100°22′20.6″W / 20.59667°N 100.372389°W / 20.59667; -100.372389 (Acueducto de Queretaro) 		Mexico water supply & control
179 1995 Victoria Falls Bridge 1905 Zambezi River
[ ⚑ ] 17°55′41.7″S 25°51′26.1″E / 17.92825°S 25.85725°E / -17.92825; 25.85725 (Victoria Falls Bridge) 		Zimbabwe & Zambia bridges
180 1996 Armour-Swift-Burlington Bridge 1912 Kansas City
[ ⚑ ] 39°7′0″N 94°34′47.5″W / 39.116667°N 94.579861°W / 39.116667; -94.579861 (Armour-Swift-Burlington Bridge) 		Missouri United States bridges
181 1996 Dublin-Belfast railway line 1839 Dublin to Belfast
[ ⚑ ] 53°43′0″N 6°20′15″W / 53.716667°N 6.3375°W / 53.716667; -6.3375 (Dublin-Belfast railway line) 		Ireland & Northern Ireland roads & rails
182 1996 Kentucky Dam 1944 Gilbertsville
[ ⚑ ] 37°0′46.4″N 88°16′10.1″W / 37.012889°N 88.269472°W / 37.012889; -88.269472 (Kentucky Dam) 		Kentucky United States dams
183 1996 Lake Moeris Quarry Road 2575-2137 BC Lake Moeris
[ ⚑ ] 29°37′24.2″N 30°38′40.4″E / 29.623389°N 30.644556°E / 29.623389; 30.644556 (Lake Moeris Quarry Road) 		Egypt roads & rails
184 1996 City Plan of Philadelphia 1682 Philadelphia
[ ⚑ ] 39°57′28.6″N 75°10′14.2″W / 39.957944°N 75.170611°W / 39.957944; -75.170611 (City Plan of Philadelphia) 		Pennsylvania United States surveys & maps
185 1996 San Antonio River Walk & Flood Control System 1929 to 1941 San Antonio
[ ⚑ ] 29°25′30.7″N 98°29′29.7″W / 29.425194°N 98.491583°W / 29.425194; -98.491583 (San Antonio River Walk & Flood Control System) 		Texas United States water control & supply
186 1997 Grand Coulee Dam 1941 Grand Coulee
[ ⚑ ] 47°57′23.8″N 118°58′51.6″W / 47.956611°N 118.981°W / 47.956611; -118.981 (Grand Coulee Dam) 		Washington (state) United States dams
187 1997 Lake Washington Ship Canal & Hiram M. Chittenden Locks 1917 Seattle
[ ⚑ ] 47°39′55.7″N 122°23′49.6″W / 47.665472°N 122.397111°W / 47.665472; -122.397111 (Lake Washington Ship Canal & Hiram M. Chittenden Locks) 		Washington (state) United States water transportation
188 1997 Navajo Bridge 1929 Page
[ ⚑ ] 36°49′3.4″N 111°37′52.3″W / 36.817611°N 111.631194°W / 36.817611; -111.631194 (Navajo Bridge) 		Arizona United States bridges
189 1997 North Island Main Trunk Railway 1885–1908 Auckland to Wellington
[ ⚑ ] 39°13′39.8″S 175°23′55.5″E / 39.227722°S 175.39875°E / -39.227722; 175.39875 (North Island Main Trunk Railway) 		North Island New Zealand roads & rails
190 1997 Northampton Street Bridge 1896 Easton to Phillipsburg
[ ⚑ ] 40°41′29.3″N 75°12′14.4″W / 40.691472°N 75.204°W / 40.691472; -75.204 (Northampton Street Bridge) 		Pennsylvania & New Jersey United States bridges
191 1997 Snowy Mountains Scheme 1974 Snowy Mountains
[ ⚑ ] 35°36′40.1″S 148°17′29.8″E / 35.611139°S 148.291611°E / -35.611139; 148.291611 (Snowy Mountains Scheme) 		New South Wales Australia power generation
192 1997 Texas Commerce Bank Building (formerly Gulf, now Chase) 1929 Houston
[ ⚑ ] 29°45′32″N 95°21′49.7″W / 29.75889°N 95.363806°W / 29.75889; -95.363806 (Texas Commerce Bank Building (formerly Gulf, now Chase)) 		Texas United States buildings
193 1997 Walnut Street Bridge 1890 Harrisburg
[ ⚑ ] 40°15′27.1″N 76°53′9.8″W / 40.257528°N 76.886056°W / 40.257528; -76.886056 (Walnut Street Bridge) 		Pennsylvania United States bridges
194 1998 Brooks AFB, Old Hangar 9 1918 San Antonio
[ ⚑ ] 29°20′38.5″N 98°26′38.9″W / 29.344028°N 98.444139°W / 29.344028; -98.444139 (Brooks AFB, Old Hangar 9) 		Texas United States aviation
195 1998 Canton Viaduct 1835 Canton
[ ⚑ ] 42°9′28.8″N 71°9′14.5″W / 42.158°N 71.154028°W / 42.158; -71.154028 (Canton Viaduct) 		Massachusetts United States bridges
196 1998 Göta Canal 1810 to 1832 Gothenburg
[ ⚑ ] 58°29′53.9″N 16°10′28.9″E / 58.498306°N 16.174694°E / 58.498306; 16.174694 (Göta Canal) 		Västra Götaland Sweden water transportation
197 1998 Moseley Wrought Iron Arch Bridge 1864 North Andover
[ ⚑ ] 42°40′8.6″N 71°7′21.3″W / 42.669056°N 71.122583°W / 42.669056; -71.122583 (Moseley Wrought Iron Arch Bridge) 		Massachusetts United States bridges
198 1998 Tehachapi Pass Railroad Line 1876 Kern County
[ ⚑ ] 35°12′3″N 118°32′13″W / 35.20083°N 118.53694°W / 35.20083; -118.53694 (Tehachapi Pass Railroad Line) 		California United States roads & rails
199 1999 Acueducto de Segovia 50 AD Segovia
[ ⚑ ] 40°56′52.7″N 4°7′4.3″W / 40.947972°N 4.117861°W / 40.947972; -4.117861 (Acueducto de Segovia) 		Castile and León Spain water supply & control
200 1999 Arroyo Seco Parkway 1940 Los Angeles
[ ⚑ ] 34°4′23″N 118°14′2″W / 34.07306°N 118.23389°W / 34.07306; -118.23389 (Arroyo Seco Parkway) 		California United States roads & rails
201 1999 Blue Ridge Parkway begun 1935 Shenandoah NP to Great Smokey Mountains NP
[ ⚑ ] 36°26′28.5″N 81°5′42.9″W / 36.44125°N 81.09525°W / 36.44125; -81.09525 (Blue Ridge Parkway) 		Virginia to North Carolina United States roads & rails
202 1999 Cape Hatteras Lighthouse 1870 Cape Hatteras
[ ⚑ ] 35°15′2″N 75°31′43.7″W / 35.25056°N 75.528806°W / 35.25056; -75.528806 (Cape Hatteras Lighthouse) 		North Carolina United States water transportation
203 1999 Maine Turnpike 1947 [ ⚑ ] 43°21′17.2″N 70°35′26.2″W / 43.354778°N 70.590611°W / 43.354778; -70.590611 (Maine Turnpike) Maine United States roads & rails
204 1999 McNeill Street Pumping Station 1887 Shreveport
[ ⚑ ] 32°31′3.8″N 93°45′25.9″W / 32.517722°N 93.757194°W / 32.517722; -93.757194 (McNeill Street Pumping Station) 		Louisiana United States water supply & control
205 2000 Cedar Falls Hydroelectric Project 1901 Seattle
[ ⚑ ] 47°25′9.2″N 121°46′54.4″W / 47.419222°N 121.781778°W / 47.419222; -121.781778 (Cedar Falls Hydroelectric Project) 		Washington (state) United States power generation
206 2000 Forth and Clyde Canal and Union Canal 1790 [ ⚑ ] 55°56′18″N 4°9′18.8″W / 55.93833°N 4.155222°W / 55.93833; -4.155222 (Forth and Clyde Canal and Union Canal) Scotland water transportation
207 2000 Hagia Sophia 537 AD Istanbul
[ ⚑ ] 41°0′31.2″N 28°58′48.6″E / 41.008667°N 28.980167°E / 41.008667; 28.980167 (Hagia Sophia) 		Istanbul Turkey buildings
208 2000 Muskingum River Navigation System 1837 Zanesville
[ ⚑ ] 39°43′59.5″N 81°54′29.4″W / 39.733194°N 81.908167°W / 39.733194; -81.908167 (Muskingum River Navigation System) 		Ohio United States water transportation
209 2000 Seventh Street Improvement Arches 1909 St. Paul
[ ⚑ ] 44°57′23″N 93°4′38″W / 44.95639°N 93.07722°W / 44.95639; -93.07722 (Seventh Street Improvement Arches) 		Minnesota United States bridges
210 2000 West Baden Springs Hotel 1902 West Baden Springs
[ ⚑ ] 38°34′1.3″N 86°37′6.6″W / 38.567028°N 86.6185°W / 38.567028; -86.6185 (West Baden Springs Hotel) 		Indiana United States buildings
211 2001 Bunker Hill Covered Bridge 1895, rebuilt 1994 Claremont
[ ⚑ ] 35°43′17.5″N 81°6′54.8″W / 35.721528°N 81.115222°W / 35.721528; -81.115222 (Bunker Hill Covered Bridge) 		North Carolina United States bridges
212 2001 Galveston Seawall and Grade Raising 1904 (expanded through 1963) Galveston
[ ⚑ ] 29°18′9″N 94°46′27″W / 29.3025°N 94.77417°W / 29.3025; -94.77417 (Galveston Seawall and Grade Raising) 		Texas United States water supply & control
213 2001 Baltimore & Ohio Roundhouse & Shop Complex 1842 to 1850s Martinsburg
[ ⚑ ] 39°27′33″N 77°57′36″W / 39.45917°N 77.96°W / 39.45917; -77.96 (Baltimore & Ohio Roundhouse & Shop Complex) 		West Virginia United States buildings
214 2002 Conwy Suspension Bridge 1826 Conwy
[ ⚑ ] 53°16′49.7″N 3°49′25.6″W / 53.280472°N 3.823778°W / 53.280472; -3.823778 (Conwy Suspension Bridge) 		Conwy Wales bridges
215 2002 Conwy Tubular Bridge 1849 Conwy
[ ⚑ ] 53°16′49″N 3°49′25″W / 53.28028°N 3.82361°W / 53.28028; -3.82361 (Conwy Tubular Bridge) 		Conwy Wales bridges
216 2002 Dorton Arena 1952 Raleigh
[ ⚑ ] 35°47′38.4″N 78°42′37.3″W / 35.794°N 78.710361°W / 35.794; -78.710361 (Dorton Arena) 		North Carolina United States buildings
217 2002 East Maui Irrigation System 1876 to 1923 East Maui
[ ⚑ ] 20°52′0″N 156°13′0″W / 20.866667°N 156.216667°W / 20.866667; -156.216667 (East Maui Irrigation System) 		Hawaii United States water supply & control
218 2002 Five Stone Arch Bridges 1830 to 1866 Hillsborough
[ ⚑ ] 43°7′49″N 71°56′41.1″W / 43.13028°N 71.94475°W / 43.13028; -71.94475 (Five Stone Arch Bridges) 		New Hampshire United States bridges
219 2002 Louisville and Portland Canal Locks & Dam 1830, rebuilt 1962 Louisville
[ ⚑ ] 38°16′18.5″N 85°46′45.6″W / 38.271806°N 85.779333°W / 38.271806; -85.779333 (Louisville and Portland Canal Locks & Dam) 		Kentucky United States water transportation
220 2002 Marshall Building 1906 Milwaukee
[ ⚑ ] 43°2′0.9″N 87°54′31.2″W / 43.033583°N 87.908667°W / 43.033583; -87.908667 (Marshall Building) 		Wisconsin United States buildings
221 2002 Menai Suspension Bridge 1826 Anglesey
[ ⚑ ] 53°13′13.1″N 4°9′48.1″W / 53.220306°N 4.163361°W / 53.220306; -4.163361 (Menai Suspension Bridge) 		Wales bridges
222 2002 Old Cape Henry Light, 1792, replaced 1881 Virginia Beach
[ ⚑ ] 36°55′32.8″N 76°0′29.3″W / 36.925778°N 76.008139°W / 36.925778; -76.008139 (Old Cape Henry Light) 		Virginia United States water transportation
223 2002 Portland Head Light 1787 Cape Elizabeth
[ ⚑ ] 43°37′23.2″N 70°12′28.4″W / 43.623111°N 70.207889°W / 43.623111; -70.207889 (Portland Head Light) 		Maine United States water transportation
224 2002 Shannon Hydroelectric Scheme 1929 [ ⚑ ] 52°42′20″N 8°36′46″W / 52.70556°N 8.61278°W / 52.70556; -8.61278 (Shannon Hydroelectric Scheme) Ireland power generation
225 2002 Waldo-Hancock Suspension Bridge 1931 Bucksport
[ ⚑ ] 44°33′37.6″N 68°48′5.9″W / 44.560444°N 68.801639°W / 44.560444; -68.801639 (Waldo-Hancock Suspension Bridge) 		Maine United States bridges
226 2003 Horseshoe Curve 1854 Altoona
[ ⚑ ] 40°29′54″N 78°29′9.1″W / 40.49833°N 78.485861°W / 40.49833; -78.485861 (Horseshoe Curve) 		Pennsylvania United States roads & rails
227 2003 Suez Canal 1869 Port Said to Suez
[ ⚑ ] 30°42′18″N 32°20′39″E / 30.705°N 32.34417°E / 30.705; 32.34417 (Suez Canal) 		Egypt water transportation
228 2003 Tennessee State Capitol 1845 to 1877 Nashville
[ ⚑ ] 36°9′57.1″N 86°47′3.4″W / 36.165861°N 86.784278°W / 36.165861; -86.784278 (Tennessee State Capitol) 		Tennessee United States buildings
229 2004 Hwaseong Fortress 1796 Suwon
[ ⚑ ] 37°17′0″N 127°0′57.6″E / 37.283333°N 127.016°E / 37.283333; 127.016 (Hwaseong Fortress) 		Gyeonggi-do South Korea buildings
230 2004 Mesa Verde Reservoirs 750 to 1180 AD Montezuma County
[ ⚑ ] 37°14′26.3″N 108°30′16.7″W / 37.240639°N 108.504639°W / 37.240639; -108.504639 (Mesa Verde Reservoirs) 		Colorado United States water supply & control
231 2004 Northern Pacific High Line Bridge No 64 1908 Valley City
[ ⚑ ] 46°56′18.9″N 97°59′26.9″W / 46.938583°N 97.990806°W / 46.938583; -97.990806 (Northern Pacific High Line Bridge No 64) 		North Dakota United States bridges
232 2004 Old Wisla Bridge Tczew
[ ⚑ ] 54°5′33.7″N 18°48′22.2″E / 54.092694°N 18.806167°E / 54.092694; 18.806167 (Old Wisla Bridge) 		Vistula River Poland bridges
233 2005 Great Western Railway Bristol Temple Meads Station 1838 [ ⚑ ] 51°37′16.2″N 1°21′26.8″W / 51.621167°N 1.357444°W / 51.621167; -1.357444 (Great Western Railway) England & Wales roads & rails
234 2005 Philadelphia City Hall 1901 Philadelphia
[ ⚑ ] 39°57′10.1″N 75°9′48.8″W / 39.952806°N 75.163556°W / 39.952806; -75.163556 (Philadelphia City Hall) 		Pennsylvania United States buildings
235 2005 Sweetwater Dam 1888 Spring Valley
[ ⚑ ] 32°41′29.8″N 117°0′29.2″W / 32.691611°N 117.008111°W / 32.691611; -117.008111 (Sweetwater Dam) 		California United States dams
236 2005 Stanley Hydraulics Laboratory at the University of Iowa established 1919 Iowa City
[ ⚑ ] 41°39′25.8″N 91°32′29″W / 41.657167°N 91.54139°W / 41.657167; -91.54139 (Stanley Hydraulics Laboratory at the University of Iowa) 		Iowa United States research & educational
237 2006 Machu Picchu 1460 AD [ ⚑ ] 13°9′48″S 72°32′44″W / 13.16333°S 72.54556°W / -13.16333; -72.54556 (Machu Picchu) Peru urban development
238 2006 Portland Observatory 1807 Portland
[ ⚑ ] 43°39′55.4″N 70°14′53.7″W / 43.665389°N 70.24825°W / 43.665389; -70.24825 (Portland Observatory) 		Maine United States water transportation
239 2006 Tipon 1200 - 1534 AD [ ⚑ ] 13°34′15″S 71°46′59″W / 13.57083°S 71.78306°W / -13.57083; -71.78306 (Tipon) Peru water supply & control
240 2007 Caledonian Canal 1822 Great Glen
[ ⚑ ] 57°6′44.9″N 4°44′18.8″W / 57.112472°N 4.738556°W / 57.112472; -4.738556 (Caledonian Canal) 		Scotland water transportation
241 2007 Craigellachie Bridge Moray 1814 Strathspey
[ ⚑ ] 57°29′28.8″N 3°11′38″W / 57.491333°N 3.19389°W / 57.491333; -3.19389 (Craigellachie Bridge Moray) 		Scotland bridges
242 2008 Choate Bridge 1764 Ipswich
[ ⚑ ] 42°40′46.1″N 70°50′13.6″W / 42.679472°N 70.837111°W / 42.679472; -70.837111 (Choate Bridge) 		Massachusetts United States bridges
243 2008 Goldfields Water Supply 1903 Kalgoorlie
[ ⚑ ] 31°57′36″S 116°10′16.7″E / 31.96°S 116.171306°E / -31.96; 116.171306 (Goldfields Water Supply) 		Western Australia Australia water supply & control
244 2008 Lacey V. Murrow Bridge and Mount Baker Ridge Tunnels 1940 King County
[ ⚑ ] 47°35′23.2″N 122°16′44.3″W / 47.589778°N 122.278972°W / 47.589778; -122.278972 (Lacey V. Murrow Bridge and Mount Baker Ridge Tunnels) 		Washington (state) United States bridges
245 2008 Woodhead Dam Woodhead Dam 1897 Cape Town
[ ⚑ ] 33°58′38.2″S 18°24′7.9″E / 33.977278°S 18.402194°E / -33.977278; 18.402194 (Woodhead Dam) 		Western Cape South Africa dams
246 2009 Guayabo Ceremonial Center 300 BC - AD 1400 Turrialba
[ ⚑ ] 9°58′21.7″N 83°41′26.6″W / 9.972694°N 83.690722°W / 9.972694; -83.690722 (Guayabo Ceremonial Center) 		Turrialba Costa Rica civil engineering profession
247 2009 Vancouver's Mapping of the West Coast of North America 1791–1795 [ ⚑ ] 45°0′0″N 124°0′43″W / 45°N 124.01194°W / 45; -124.01194 (Vancouver's Mapping of the West Coast of North America) Canada , Mexico and United States surveys & maps
248 2009 Poughkeepsie-Highland Bridge 1886–1888 Poughkeepsie
[ ⚑ ] 41°42′38.5″N 73°56′41.1″W / 41.710694°N 73.94475°W / 41.710694; -73.94475 (Poughkeepsie-Highland Bridge) 		New York United States bridges
249 2009 Manhattan Bridge 1909 New York City
[ ⚑ ] 40°42′27″N 73°59′26.9″W / 40.7075°N 73.990806°W / 40.7075; -73.990806 (Manhattan Bridge) 		New York United States bridges
250 2009 Queensboro Bridge 1909 New York City
[ ⚑ ] 40°45′24.2″N 73°57′15.1″W / 40.756722°N 73.954194°W / 40.756722; -73.954194 (Queensboro Bridge) 		New York United States bridges
251 2009 Williamsburg Bridge 1903 New York City
[ ⚑ ] 40°42′49.2″N 73°58′20.5″W / 40.713667°N 73.972361°W / 40.713667; -73.972361 (Williamsburg Bridge) 		New York United States bridges
252 2010 Mackinac Bridge 1958 Straits of Mackinac
[ ⚑ ] 45°48′48.8″N 84°43′42″W / 45.813556°N 84.72833°W / 45.813556; -84.72833 (Mackinac Bridge) 		Michigan United States bridges
253 2010 Rensselaer Polytechnic Institute 1824 Troy
[ ⚑ ] 42°43′48″N 73°40′39″W / 42.73°N 73.6775°W / 42.73; -73.6775 (Rensselaer Polytechnic Institute) 		New York United States research & educational
254 2010 Thomas Viaduct Railroad Bridge[8] 1835 Elkridge and Relay
[ ⚑ ] 39°13′17.5″N 76°42′48.1″W / 39.221528°N 76.713361°W / 39.221528; -76.713361 (Thomas Viaduct Railroad Bridge) 		Maryland United States bridges
255 2011 Utica Memorial Auditorium 1959 Utica
[ ⚑ ] 43°6′17.9″N 75°14′0.5″W / 43.104972°N 75.233472°W / 43.104972; -75.233472 (Utica Memorial Auditorium) 		New York United States buildings
256 2011 Tacoma Narrows Bridges[9] 1940-1950 Tacoma
[ ⚑ ] 47°16′8″N 122°33′3″W / 47.26889°N 122.55083°W / 47.26889; -122.55083 (Tacoma Narrows Bridges) 		Washington (state) United States bridges
257 2011 Flight of Five Locks 1915 Waterford
[ ⚑ ] 42°48′2.8″N 73°41′29.1″W / 42.800778°N 73.691417°W / 42.800778; -73.691417 (Flight of Five Locks) 		New York United States water transportation
258 2011 Petra 309 BC [ ⚑ ] 30°19′43″N 35°26′31″E / 30.32861°N 35.44194°E / 30.32861; 35.44194 (Petra) Ma'an Governorate Jordan buildings
259 2012 Zion-Mount Carmel Tunnel and Highway File:West entrance to Zion Tunnel. Zion Tunnel is 6000 feet long, cut through solid sandstone. It is said to be the... - NARA - 520396.tif 1930 Zion National Park
[ ⚑ ] 37°12′40.7″N 112°57′29.6″W / 37.211306°N 112.958222°W / 37.211306; -112.958222 (Zion-Mount Carmel Tunnel and Highway) 		Utah United States roads & rails
260 2012 Huey P. Long Bridge 1935 Jefferson Parish
[ ⚑ ] 29°56′38.8″N 90°10′7.6″W / 29.944111°N 90.168778°W / 29.944111; -90.168778 (Huey P. Long Bridge) 		Louisiana United States bridges
261 2012 Grand Central Terminal 1913 New York City
[ ⚑ ] 40°45′10.3″N 73°58′37.9″W / 40.752861°N 73.977194°W / 40.752861; -73.977194 (Grand Central Terminal) 		New York United States roads & rails
262 2013 Titan Clydebank crane 1907 Clydebank
[ ⚑ ] 55°53′50.5″N 4°24′31.2″W / 55.897361°N 4.408667°W / 55.897361; -4.408667 (Titan Clydebank crane) 		West Dunbartonshire Scotland buildings
263 2013 Waterford Bridges Troy-Waterford Bridge 1909 Troy and Waterford
[ ⚑ ] 42°47′19.3″N 73°40′25.8″W / 42.788694°N 73.673833°W / 42.788694; -73.673833 (Waterford Bridges) 		New York United States bridges
264 2013 Lake Pontchartrain Causeway 1956 Lake Pontchartrain
[ ⚑ ] 30°11′59.2″N 90°7′21.7″W / 30.199778°N 90.122694°W / 30.199778; -90.122694 (Lake Pontchartrain Causeway) 		Louisiana United States bridges
265 2014 The Dalles Dam 1957 Columbia River
[ ⚑ ] 45°36′50.3″N 121°8′3″W / 45.613972°N 121.13417°W / 45.613972; -121.13417 (The Dalles Dam) 		Oregon & Washington (state) United States dams
266 2015 Gladesville Bridge 1964 Sydney
[ ⚑ ] 33°50′31.3″S 151°8′51.8″E / 33.842028°S 151.147722°E / -33.842028; 151.147722 (Gladesville Bridge) 		New South Wales Australia bridges
267 2016 Cape Agulhas Lighthouse 1848 L'Agulhas
[ ⚑ ] 34°49′45.7″S 20°0′32.4″E / 34.829361°S 20.009°E / -34.829361; 20.009 (Cape Agulhas Lighthouse) 		South Africa water transportation
268 2016 Arrowrock Dam 1912 Boise and Elmore
[ ⚑ ] 43°35′43″N 115°55′21.1″W / 43.59528°N 115.922528°W / 43.59528; -115.922528 (Arrowrock Dam) 		Idaho United States dams
269 2016 All-American Canal[10] 1940 Imperial County
[ ⚑ ] 32°52′59″N 114°27′54″W / 32.88306°N 114.465°W / 32.88306; -114.465 (All-American Canal) 		California United States water supply & control
270 2016 Canal du Midi[11] 1681 Toulouse to Étang de Thau
[ ⚑ ] 43°12′52.9″N 2°25′49.8″E / 43.214694°N 2.4305°E / 43.214694; 2.4305 		Occitania France water transportation
271 2016 Liverpool and Manchester Railway[12] 1830 Liverpool to Manchester
[ ⚑ ] 53°27′10.8″N 2°36′58.6″W / 53.453°N 2.616278°W / 53.453; -2.616278 (Liverpool & Manchester Railway) 		North West England England roads & rails
272 2017 Bonnet Carré Spillway 1931 St. Charles Parish
[ ⚑ ] 30°0′7.2″N 90°26′23.3″W / 30.002°N 90.439806°W / 30.002; -90.439806 (Bonnet Carré Spillway) 		Louisiana United States dams
273 2017 Duluth Aerial Ferry/Lift Bridge[13] 1905 Duluth
[ ⚑ ] 46°46′45.8″N 92°5′35.3″W / 46.779389°N 92.093139°W / 46.779389; -92.093139 (Duluth Aerial Ferry/Lift Bridge) 		Minnesota United States bridges
274 2017 Mississippi River Basin Model[14] 1966 Jackson
[ ⚑ ] 32°18′21.8″N 90°19′8.2″W / 32.306056°N 90.318944°W / 32.306056; -90.318944 (Mississippi River Basin Model) 		Mississippi United States research & educational
275 2017 Chaffey Brothers Irrigation Works[15] 1887 Mildura and Renmark
[ ⚑ ] 34°15′1.6″S 142°13′28.8″E / 34.250444°S 142.224667°E / -34.250444; 142.224667 (Chaffey Brothers Irrigation Works) 		Victoria and South Australia Australia water supply & control
276 2017 Qhapaq Ñan: The Great Inka Road System[16] 1000 BC - 1533 AD [ ⚑ ] 13°13′0.3″S 72°23′5.2″W / 13.21675°S 72.384778°W / -13.21675; -72.384778 (Qhapaq Ñan: The Great Inka Road System) Colombia to Chile roads & rails
277 2017 Tunnel of Eupalinos[17] 520 BC Samos
[ ⚑ ] 37°41′40.6″N 26°55′48″E / 37.694611°N 26.93°E / 37.694611; 26.93 (Tunnel of Eupalinos) 		North Aegean Greece tunnels
278 2018 Augusta Canal and Industrial District 1845 Augusta
[ ⚑ ] 33°31′17.6″N 82°0′38.9″W / 33.521556°N 82.010806°W / 33.521556; -82.010806 (Augusta Canal and Industrial District) 		Georgia United States power generation
279 2018 Old River Station[18] 1907 Cincinnati
[ ⚑ ] 39°4′17″N 84°25′40″W / 39.07139°N 84.42778°W / 39.07139; -84.42778 (Old River Station) 		Ohio United States water supply & control
280 2018 Boundary Layer Wind Tunnel Laboratory[19] 1965 London
[ ⚑ ] 43°0′14″N 81°16′32.5″W / 43.00389°N 81.275694°W / 43.00389; -81.275694 (Boundary Layer Wind Tunnel Laboratory) 		Ontario Canada research & educational
281 2018 Institution of Civil Engineers[20] 1818 London
[ ⚑ ] 51°30′4″N 0°7′44.4″W / 51.50111°N 0.129°W / 51.50111; -0.129 (Institution of Civil Engineers) 		England research & educational
282 2018 Union Chain Bridge[21] 1820 Horncliffe to Fishwick
[ ⚑ ] 55°45′9.3″N 2°6′24.4″W / 55.752583°N 2.106778°W / 55.752583; -2.106778 (Union Chain Bridge) 		England to Scotland bridges
283 2019 Kaibab Trail Suspension Bridge[22] 1928 Grand Canyon
[ ⚑ ] 36°6′53.2″N 112°5′21.1″W / 36.114778°N 112.089194°W / 36.114778; -112.089194 (Kaibab Trail Suspension Bridge) 		Arizona United States bridges
284 2019 Union Pacific Railroad[23] 1868 Omaha westward
[ ⚑ ] 41°15′0.9″N 95°55′37.4″W / 41.25025°N 95.927056°W / 41.25025; -95.927056 (Union Pacific Railroad) 		Nebraska United States roads & rails
285 2019 Silver Bridge Collapse - Creation of National Inspection Standards[24] 1967 Point Pleasant
[ ⚑ ] 38°50′42″N 82°8′28″W / 38.845°N 82.14111°W / 38.845; -82.14111 (Silver Bridge Collapse - Creation of National Inspection Standards) 		West Virginia United States bridges
286 2020 NASA Vehicle Assembly Building[25] 1966 Titusville
[ ⚑ ] 28°35′11″N 80°39′5″W / 28.58639°N 80.65139°W / 28.58639; -80.65139 (NASA Vehicle Assembly Building) 		Florida United States buildings
287 2021 Main Avenue Bridge[26] 1939 Cleveland
[ ⚑ ] 41°29′55.2″N 81°42′18.5″W / 41.498667°N 81.705139°W / 41.498667; -81.705139 (Main Avenue Bridge) 		Ohio United States bridges
288 2021 Sydney Opera House[15] 1973 Sydney
[ ⚑ ] 33°51′24″S 151°12′55″E / 33.85667°S 151.21528°E / -33.85667; 151.21528 (Sydney Opera House) 		New South Wales Australia buildings
289 2022 David Thompson's Surveying and Mapping of the Northwest of North America[27] 1814 Canada & United States surveys & maps
290 2022 Portage Lake Bridge[28] 1959 Hancock and Houghton
[ ⚑ ] 47°7′25.9″N 88°34′26.7″W / 47.123861°N 88.574083°W / 47.123861; -88.574083 (Portage Lake Bridge) 		Michigan United States bridges
291 2022 Salmon Creek Dam[29] 1914 Juneau
[ ⚑ ] 58°20′30″N 134°24′12″W / 58.34167°N 134.40333°W / 58.34167; -134.40333 (Salmon Creek Dam) 		Alaska United States dams

See also

  • List of Historic Mechanical Engineering Landmarks

References

  1. ↑ Witcher, T.R. (January 2020). "Preserving the Profession’s Achievements: The ASCE Historic Civil Engineering Landmark Program". Civil Engineering (American Society of Civil Engineers): 37. 
  2. ↑ "Historic Landmarks". American Society of Civil Engineers. https://www.asce.org/about-civil-engineering/history-and-heritage/historic-landmarks. 
  3. ↑ Grand Central Terminal is named a national historical civil engineering landmark
  4. ↑ ASCE Names Huey P. Long Bridge a Civil Engineering Landmark
  5. ↑ Stephens, Odin L.; Mengak, Michael T.; Osborn, David; Miller, Karl V. (March 2005). "Using Milorganite to temporarily repel white-tailed deer from food plots" (PDF). Wildlife Management Series. WSFR. http://warnell.forestry.uga.edu/service/library/for05-001/for05-001.pdf. 
  6. ↑ "International Boundary Marker | ASCE". https://www.asce.org/project/international-boundary-marker/. 
  7. ↑ The Statue of Liberty is on Liberty Island, federal property administered by the National Park Service, located within the territorial jurisdiction of the State of New York. A pact between New York and New Jersey, ratified by Congress in 1834, declared this issue.
  8. ↑ "Thomas Viaduct Railroad Bridge | ASCE". https://www.asce.org/about-civil-engineering/history-and-heritage/historic-landmarks/thomas-viaduct-railroad-bridge. 
  9. ↑ "Tacoma Narrows Bridges | ASCE". https://www.asce.org/about-civil-engineering/history-and-heritage/historic-landmarks/tacoma-narrows-bridges. 
  10. ↑ Harding, Matt (20 December 2016). "Canal System Now Engineering Landmark". Yuma Sun: p. 1. 
  11. ↑ "Canal du Midi Designated as International Historic Civil Engineering Landmark". 2016-08-30. https://www.aawre.org/news/canal-du-midi-designated-international-historic-civil-engineering-landmark. 
  12. ↑ Morris, Paula (2016-09-14). "Rainhill reaffirmed as the birthplace of the railway". St Helens Star. https://www.sthelensstar.co.uk/news/14741938.rainhill-reaffirmed-as-the-birthplace-of-the-railway/. 
  13. ↑ Lundy, John (2017-09-11). "Centenarian engineer, Aerial Lift Bridge share honors". Duluth News Tribune. https://www.duluthnewstribune.com/news/1708237-Centenarian-engineer-Aerial-Lift-Bridge-share-honors. 
  14. ↑ "In Military Lingo, MRBM = NHCEL". 2018-05-24. https://misspreservation.com/2018/05/24/mississippi-river-basin-model-national-historic-civil-engineering-landmark/. 
  15. ↑ 15.0 15.1 "Sydney Opera House | ASCE". https://www.asce.org/publications-and-news/civil-engineering-source/article/2022/04/11/sydney-opera-house-joins-list-of-asce-historic-landmarks. 
  16. ↑ "Peru: Qhapaq Ñan designated ASCE historic civil engineering landmark". Andina. 2017-08-11. https://andina.pe/agencia/noticia-peru-qhapaq-nan-designated-asce-historic-civil-engineering-landmark-689070.aspx. 
  17. ↑ "Ανακήρυξη του Ευπαλίνειου Όρυγματος ως Ιστορικού Τοπόσημου Τεχνολογίας Πολιτικού Μηχανικού" (in Greek). National Technical University of Athens School of Civil Engineering. 2017-10-29. http://www.civil.ntua.gr/news/2017/11/4/eupalinos-tunnel/. 
  18. ↑ "Old River Station | Cincinnati Section ASCE". https://sections.asce.org/cincinnati/old-river-station-national-historic-landmark-award-ceremony. 
  19. ↑ "Boundary Layer Wind Tunnel, London, Ontario". https://cscehistory.ca/international/boundary-layer-wind-tunnel-london-ontario/. 
  20. ↑ Booth, Kenneth (2018-10-29). "ASCE recognises ICE as historic civil engineering landmark". Building Design & Construction. https://www.bdcmagazine.com/2018/10/asce-recognises-ice-as-historic-civil-engineering-landmark/. 
  21. ↑ Johnson, Phil (2020-07-25). "Union Chain Bridge gets international badge of honour to mark bicentenary". The Scotsman. https://www.scotsman.com/heritage-and-retro/heritage/union-chain-bridge-gets-international-badge-honour-mark-bicentenary-2923973. 
  22. ↑ "Kaibab Trail Suspension Bridge | ASCE AZ Section". http://www.azsce.org/kaibab-suspension-bridge/. 
  23. ↑ "Union Pacific Railroad | csengineermag.com". https://csengineermag.com/union-pacific-railroad-recognized-as-national-historic-civil-engineering-landmark/. 
  24. ↑ "Silver Bridge Collapse - Creation of National Inspection Standards | HMdb.org". https://www.hmdb.org/m.asp?m=189706. 
  25. ↑ "NASA Vehicle Assembly Building | NASA". https://www.nasa.gov/feature/the-many-stories-of-the-vab. 
  26. ↑ "Main Avenue Bridge | ASCE Sections". https://sections.asce.org/cleveland/main-avenue-bridge-national-historic-civil-engineering-landmark-dedication-and-annual-dinner-event. 
  27. ↑ Gilbert, David R.; Bartlett, F. Michael; Bedford, Cole G. (2022). "David Thompson's Surveying and Mapping of the Northwest of North America". CSCE Annual Conference. Whistler, British Columbia. 
  28. ↑ "Portage Lake Bridge | MTU". https://www.mtu.edu/news/2022/06/rich-history-unique-design-make-lift-bridge-a-national-historic-civil-engineering-landmark.html. 
  29. ↑ Kuhn, Jonson (2022-09-10). "Salmon Creek Dam recognized as a National Historic Civil Engineering Landmark". Juneau Empire. https://www.juneauempire.com/news/salmon-creek-dam-recognized-as-a-national-historic-civil-engineering-landmark/. 
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