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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 | 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 |
Pennsylvania | United States | water transportation |
| 20 | 1971 | Bethlehem Waterworks | .jpg)
|
1761 | Bethlehem [ ⚑ ] 40°37′8.7″N 75°22′58.2″W / 40.619083°N 75.382833°W |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
Ohio | United States | buildings |
| 35 | 1973 | Pelton Impulse Water Wheel | .png)
|
1878 | Camptonville [ ⚑ ] 39°27′7″N 121°2′55″W / 39.45194°N 121.04861°W |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 | 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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
Michigan | United States | bridges |
| 101 | 1982 | Watertown Arsenal | .jpg)
|
1859 | Watertown [ ⚑ ] 42°21′44″N 71°9′58″W / 42.36222°N 71.16611°W |
Massachusetts | United States | research & educational |
| 102 | 1983 | Atlantic City Convention Hall | .jpg)
|
1929 | Atlantic City [ ⚑ ] 39°21′18″N 74°26′19.1″W / 39.355°N 74.438639°W |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 | 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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
Île-de-France | France | buildings |
| 128 | 1986 | El Camino Real | 
|
1598-1800s | Santa Fe and Mexico City [ ⚑ ] 34°3′38.7″N 106°53′36.6″W / 34.06075°N 106.8935°W |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 | 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 |
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 |
New South Wales | Australia | bridges |
| 152 | 1989 | Royal Colonial Boundary of 1665 | _-_Geographicus_-_CarolinaGeorgia-bowen-1747.jpg)
|
1728–1819 | Middlesboro [ ⚑ ] 36°36′2.9″N 83°40′31.5″W / 36.600806°N 83.675417°W |
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 |
Hebei | China | bridges |
| 154 | 1990 | Fort Peck Dam | _Spillway_01.jpg)
|
1940 | Fort Peck [ ⚑ ] 48°0′10.1″N 106°24′58″W / 48.002806°N 106.41611°W |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
Washington (state) | United States | water transportation |
| 188 | 1997 | Navajo Bridge | .jpg)
|
1929 | Page [ ⚑ ] 36°49′3.4″N 111°37′52.3″W / 36.817611°N 111.631194°W |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
Castile and León | Spain | water supply & control |
| 200 | 1999 | Arroyo Seco Parkway | 1940.jpg)
|
1940 | Los Angeles [ ⚑ ] 34°4′23″N 118°14′2″W / 34.07306°N 118.23389°W |
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 |
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 |
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 | 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 |
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 |
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 | 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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
Conwy | Wales | bridges |
| 215 | 2002 | Conwy Tubular Bridge | 
|
1849 | Conwy [ ⚑ ] 53°16′49″N 3°49′25″W / 53.28028°N 3.82361°W |
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 |
North Carolina | United States | buildings |
| 217 | 2002 | East Maui Irrigation System | .jpg)
|
1876 to 1923 | East Maui [ ⚑ ] 20°52′0″N 156°13′0″W / 20.866667°N 156.216667°W |
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 |
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 |
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 |
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 |
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 |
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 |
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 | 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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
Vistula River | Poland | bridges | |
| 233 | 2005 | Great Western Railway | 
|
1838 | [ ⚑ ] 51°37′16.2″N 1°21′26.8″W / 51.621167°N 1.357444°W | 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 |
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 |
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 |
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 | 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 |
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 | 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 |
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 |
Scotland | bridges | |
| 242 | 2008 | Choate Bridge | 
|
1764 | Ipswich [ ⚑ ] 42°40′46.1″N 70°50′13.6″W / 42.679472°N 70.837111°W |
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 |
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 |
Washington (state) | United States | bridges |
| 245 | 2008 | Woodhead Dam | 
|
1897 | Cape Town [ ⚑ ] 33°58′38.2″S 18°24′7.9″E / 33.977278°S 18.402194°E |
Western Cape | South Africa | dams |
| 246 | 2009 | Guayabo Ceremonial Center | _001.jpg)
|
300 BC - AD 1400 | Turrialba [ ⚑ ] 9°58′21.7″N 83°41′26.6″W / 9.972694°N 83.690722°W |
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 | 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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 | 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 |
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 |
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 |
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 |
West Dunbartonshire | Scotland | buildings |
| 263 | 2013 | Waterford Bridges | 
|
1909 | Troy and Waterford [ ⚑ ] 42°47′19.3″N 73°40′25.8″W / 42.788694°N 73.673833°W |
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 |
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 |
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 |
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 |
South Africa | water transportation | |
| 268 | 2016 | Arrowrock Dam | .jpg)
|
1912 | Boise and Elmore [ ⚑ ] 43°35′43″N 115°55′21.1″W / 43.59528°N 115.922528°W |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 | 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 |
North Aegean | Greece | tunnels |
| 278 | 2018 | Augusta Canal and Industrial District | .jpg)
|
1845 | Augusta [ ⚑ ] 33°31′17.6″N 82°0′38.9″W / 33.521556°N 82.010806°W |
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 |
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 |
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 |
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 |
England to Scotland | bridges | |
| 283 | 2019 | Kaibab Trail Suspension Bridge[22] | .jpg)
|
1928 | Grand Canyon [ ⚑ ] 36°6′53.2″N 112°5′21.1″W / 36.114778°N 112.089194°W |
Arizona | United States | bridges |
| 284 | 2019 | Union Pacific Railroad[23] | .jpg)
|
1868 | Omaha westward [ ⚑ ] 41°15′0.9″N 95°55′37.4″W / 41.25025°N 95.927056°W |
Nebraska | United States | roads & rails |
| 285 | 2019 | Silver Bridge Collapse - Creation of National Inspection Standards[24] | .jpg)
|
1967 | Point Pleasant [ ⚑ ] 38°50′42″N 82°8′28″W / 38.845°N 82.14111°W |
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 |
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 |
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 |
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 |
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 |
Alaska | United States | dams |
See also
- List of Historic Mechanical Engineering Landmarks
References
- ↑ 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.
- ↑ "Historic Landmarks". American Society of Civil Engineers. https://www.asce.org/about-civil-engineering/history-and-heritage/historic-landmarks.
- ↑ Grand Central Terminal is named a national historical civil engineering landmark
- ↑ ASCE Names Huey P. Long Bridge a Civil Engineering Landmark
- ↑ 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.
- ↑ "International Boundary Marker | ASCE". https://www.asce.org/project/international-boundary-marker/.
- ↑ 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.
- ↑ "Thomas Viaduct Railroad Bridge | ASCE". https://www.asce.org/about-civil-engineering/history-and-heritage/historic-landmarks/thomas-viaduct-railroad-bridge.
- ↑ "Tacoma Narrows Bridges | ASCE". https://www.asce.org/about-civil-engineering/history-and-heritage/historic-landmarks/tacoma-narrows-bridges.
- ↑ Harding, Matt (20 December 2016). "Canal System Now Engineering Landmark". Yuma Sun: p. 1.
- ↑ "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.
- ↑ 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/.
- ↑ 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.
- ↑ "In Military Lingo, MRBM = NHCEL". 2018-05-24. https://misspreservation.com/2018/05/24/mississippi-river-basin-model-national-historic-civil-engineering-landmark/.
- ↑ 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.
- ↑ "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.
- ↑ "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/.
- ↑ "Old River Station | Cincinnati Section ASCE". https://sections.asce.org/cincinnati/old-river-station-national-historic-landmark-award-ceremony.
- ↑ "Boundary Layer Wind Tunnel, London, Ontario". https://cscehistory.ca/international/boundary-layer-wind-tunnel-london-ontario/.
- ↑ 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/.
- ↑ 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.
- ↑ "Kaibab Trail Suspension Bridge | ASCE AZ Section". http://www.azsce.org/kaibab-suspension-bridge/.
- ↑ "Union Pacific Railroad | csengineermag.com". https://csengineermag.com/union-pacific-railroad-recognized-as-national-historic-civil-engineering-landmark/.
- ↑ "Silver Bridge Collapse - Creation of National Inspection Standards | HMdb.org". https://www.hmdb.org/m.asp?m=189706.
- ↑ "NASA Vehicle Assembly Building | NASA". https://www.nasa.gov/feature/the-many-stories-of-the-vab.
- ↑ "Main Avenue Bridge | ASCE Sections". https://sections.asce.org/cleveland/main-avenue-bridge-national-historic-civil-engineering-landmark-dedication-and-annual-dinner-event.
- ↑ 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.
- ↑ "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.
- ↑ 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/.
External links
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