Survey No. |
Name (as assigned by HAER) |
Built |
Documented |
Carries |
Crosses |
Coordinates |
DC-4 |
Potomac Aqueduct |
1843 |
1983 |
|
Potomac River |
38°54′15″N 77°04′14″W / 38.90417°N 77.07056°W / 38.90417; -77.07056 (Potomac Aqueduct) |
DC-6 |
Connecticut Avenue Bridge |
1907 |
1987 |
Connecticut Avenue, NW |
Rock Creek and Beach Drive, NW |
38°55′14″N 77°02′59″W / 38.92056°N 77.04972°W / 38.92056; -77.04972 (Connecticut Avenue Bridge) |
DC-7 |
Arlington Memorial Bridge |
1932 |
1988 |
|
Potomac River and George Washington Memorial Parkway northbound |
38°53′14″N 77°03′20″W / 38.88722°N 77.05556°W / 38.88722; -77.05556 (Arlington Memorial Bridge) |
DC-7-B |
Arlington Memorial Bridge, Boundary Channel Extension |
1932 |
1988 |
Memorial Avenue |
Boundary Channel and George Washington Memorial Parkway southbound |
38°53′07″N 77°03′41″W / 38.88528°N 77.06139°W / 38.88528; -77.06139 (Arlington Memorial Bridge, Boundary Channel Extension) |
DC-9-A |
Tidal Reservoir, Inlet Bridge |
1909 |
1988 |
Ohio Drive, SW |
Tidal Basin inlet |
38°52′49″N 77°02′25″W / 38.88028°N 77.04028°W / 38.88028; -77.04028 (Tidal Reservoir, Inlet Bridge) |
DC-9-B |
Tidal Reservoir, Outlet |
1889 |
1988 |
Pedestrian way adjacent to Ohio Drive, SW |
Tidal Basin outlet |
38°52′58″N 77°01′58″W / 38.88278°N 77.03278°W / 38.88278; -77.03278 (Tidal Reservoir, Outlet) |
DC-10 |
Shoreham Hill Bridge |
1938 |
1988 |
Rock Creek and Potomac Parkway |
Rock Creek |
38°55′12″N 77°03′10″W / 38.92000°N 77.05278°W / 38.92000; -77.05278 (Shoreham Hill Bridge) |
DC-11 |
Rock Creek and Potomac Parkway Bridge near P Street |
1936 |
1988 |
Rock Creek and Potomac Parkway |
Rock Creek |
38°54′36″N 77°03′01″W / 38.91000°N 77.05028°W / 38.91000; -77.05028 (Rock Creek and Potomac Parkway Bridge near P Street) |
DC-12 |
Boulder Bridge |
1902 |
1988 |
Beach Drive, NW |
Rock Creek |
38°56′54″N 77°02′42″W / 38.94833°N 77.04500°W / 38.94833; -77.04500 (Boulder Bridge) |
DC-13 |
Ross Drive Bridge |
1907 |
1988 |
Ross Drive, NW |
Tributary of Rock Creek |
38°57′12″N 77°02′45″W / 38.95333°N 77.04583°W / 38.95333; -77.04583 (Ross Drive Bridge) |
DC-14 |
Rapids Footbridge |
1934 |
1988 |
Trail in Rock Creek Park |
Rock Creek |
38°57′12″N 77°02′37″W / 38.95333°N 77.04361°W / 38.95333; -77.04361 (Rapids Footbridge) |
DC-15 |
Pinehurst Bridge |
1911 |
1988 |
Beach Drive, NW |
Pinehurst Branch |
38°58′17″N 77°02′38″W / 38.971364°N 77.043774°W / 38.971364; -77.043774 (Pinehurst Bridge) |
DC-16 |
South Waterside Drive Overpass |
1933 |
1988 |
Waterside Drive, NW, southbound |
Rock Creek and Potomac Parkway northbound |
38°54′49″N 77°03′18″W / 38.91361°N 77.05500°W / 38.91361; -77.05500 (South Waterside Drive Overpass) |
DC-17 |
Grant Road Bridge |
1898 |
1988 |
Grant Road, NW |
Broad Branch |
38°54′49″N 77°03′18″W / 38.91361°N 77.05500°W / 38.91361; -77.05500 (Grant Road Bridge) |
DC-18 |
Old Military Road Bridge |
1929 |
1988 |
Joyce Road, NW |
Rock Creek |
38°57′37″N 77°02′32″W / 38.96028°N 77.04222°W / 38.96028; -77.04222 (Old Military Road Bridge) |
DC-19 |
Boundary Channel Bridge |
1932 |
1988 |
George Washington Memorial Parkway |
Boundary Channel |
38°52′31″N 77°02′49″W / 38.87528°N 77.04694°W / 38.87528; -77.04694 (Boundary Channel Bridge) |
DC-20 |
K Street Bridge |
1941 |
1992 |
K Street, NW |
Rock Creek and Rock Creek and Potomac Parkway |
38°54′09″N 77°03′28″W / 38.90250°N 77.05778°W / 38.90250; -77.05778 (K Street Bridge) |
DC-21 |
Pennsylvania Avenue Bridge |
1916 |
1992 |
Pennsylvania Avenue, NW |
Rock Creek and Rock Creek and Potomac Parkway |
38°54′17″N 77°03′22″W / 38.90472°N 77.05611°W / 38.90472; -77.05611 (Pennsylvania Avenue Bridge) |
DC-22 |
Massachusetts Avenue Bridge |
1939 |
1992 |
Massachusetts Avenue, NW |
Rock Creek and Rock Creek and Potomac Parkway |
38°55′04″N 77°03′30″W / 38.91778°N 77.05833°W / 38.91778; -77.05833 (Massachusetts Avenue Bridge) |
DC-23 |
Calvert Street Bridge |
1935 |
1992 |
Calvert Street, NW |
Rock Creek and Beach Drive, NW |
38°55′24″N 77°02′54″W / 38.92333°N 77.04833°W / 38.92333; -77.04833 (Calvert Street Bridge) |
DC-24 |
Woodley Lane Bridge Abutment |
1889 |
1992 |
Belmont Road, NW |
Rock Creek |
38°55′17″N 77°02′59″W / 38.92139°N 77.04972°W / 38.92139; -77.04972 (Woodley Lane Bridge Abutment) |
DC-25 |
Milkhouse Ford |
1904 |
1992 |
Trail in Rock Creek Park |
Rock Creek |
38°57′53″N 77°02′51″W / 38.96472°N 77.04750°W / 38.96472; -77.04750 (Milkhouse Ford) |
DC-26 |
Old Harvard Street Bridge |
1901 |
1992 |
National Zoo Drive, NW |
Rock Creek |
38°55′39″N 77°02′41″W / 38.92750°N 77.04472°W / 38.92750; -77.04472 (Old Harvard Street Bridge) |
DC-27 |
Connecticut Avenue Bridge, Spanning Klingle Valley |
1932 |
1992 |
Connecticut Avenue, NW |
Klingle Valley |
38°55′56″N 77°03′24″W / 38.93222°N 77.05667°W / 38.93222; -77.05667 (Connecticut Avenue Bridge, Spanning Klingle Valley) |
DC-28 |
Pierce Mill Bridge |
1895 |
1992 |
Tilden Street, NW |
Rock Creek |
38°56′23″N 77°03′06″W / 38.93972°N 77.05167°W / 38.93972; -77.05167 (Pierce Mill Bridge) |
DC-29 |
Sixteenth Street Bridge |
1910 |
1992 |
16th Street, NW |
Piney Branch and Piney Branch Parkway, NW |
38°56′18″N 77°02′11″W / 38.93833°N 77.03639°W / 38.93833; -77.03639 (Sixteenth Street Bridge) |
DC-30 |
Morrow Drive Bridge |
1911 |
1992 |
Morrow Drive, NW |
Tributary of Rock Creek |
38°57′34″N 77°02′19″W / 38.95944°N 77.03861°W / 38.95944; -77.03861 (Morrow Drive Bridge) |
DC-31 |
Rolling Meadow Footbridge |
1934 |
1992 |
Trail in Rock Creek Park |
Rock Creek |
38°58′13″N 77°02′41″W / 38.97028°N 77.04472°W / 38.97028; -77.04472 (Rolling Meadow Footbridge) |
DC-32 |
Riley Springs Footbridge |
1935 |
1992 |
Trail in Rock Creek Park |
Rock Creek |
38°58′41″N 77°02′36″W / 38.97806°N 77.04333°W / 38.97806; -77.04333 (Riley Springs Footbridge) |
DC-33 |
Bluffs Footbridge |
1934 |
1992 |
Trail in Rock Creek Park |
Rock Creek |
38°56′12″N 77°02′52″W / 38.93667°N 77.04778°W / 38.93667; -77.04778 (Bluffs Footbridge) |
DC-34 |
Boundary Footbridge |
1935 |
1992 |
Valley Trail |
Rock Creek |
38°59′13″N 77°03′08″W / 38.98694°N 77.05222°W / 38.98694; -77.05222 (Boundary Footbridge) |
DC-35 |
Lyon's Mill Footbridge |
1934 |
1992 |
Trail in Rock Creek Park |
Rock Creek |
38°54′45″N 77°03′15″W / 38.91250°N 77.05417°W / 38.91250; -77.05417 (Lyons Mill Footbridge) |
DC-36 |
Saddle Club Footbridge |
1934 |
1992 |
Trail in Rock Creek Park |
Rock Creek |
38°55′12″N 77°03′12″W / 38.92000°N 77.05333°W / 38.92000; -77.05333 (Saddle Club Footbridge) |
DC-37 |
M Street Bridge |
1930 |
1992 |
M Street, NW |
Rock Creek and Rock Creek and Potomac Parkway |
38°54′19″N 77°03′20″W / 38.90528°N 77.05556°W / 38.90528; -77.05556 (M Street Bridge) |
DC-38 |
Q Street Bridge |
1915 |
1992 |
Q Street, NW |
Rock Creek and Rock Creek and Potomac Parkway |
38°54′39″N 77°03′04″W / 38.91083°N 77.05111°W / 38.91083; -77.05111 (Q Street Bridge) |
DC-39 |
Little Inlet Bridge |
1963 |
1994 |
George Washington Memorial Parkway |
Boundary Channel |
38°53′24″N 77°03′51″W / 38.89000°N 77.06417°W / 38.89000; -77.06417 (Little Inlet Bridge) |
DC-40 |
U.S. Route 50 Overpass, Westbound |
1946 |
1994 |
Ramp from George Washington Memorial Parkway northbound to US 50 (Arlington Boulevard) westbound |
Boundary Channel and George Washington Memorial Parkway southbound |
38°53′20″N 77°03′51″W / 38.88889°N 77.06417°W / 38.88889; -77.06417 (U.S. Route 50 Overpass, Westbound) |
DC-41 |
Washington Boulevard Overpass |
1942 |
1993 |
Washington Boulevard northbound |
Ramp from Washington Boulevard southbound to George Washington Memorial Parkway southbound |
38°52′57″N 77°03′27″W / 38.88250°N 77.05750°W / 38.88250; -77.05750 (Washington Boulevard Overpass) |
DC-42 |
Washington Boulevard Bridge |
1943 |
1994 |
SR 27 (Washington Boulevard) |
Boundary Channel and George Washington Memorial Parkway southbound |
38°52′50″N 77°03′26″W / 38.88056°N 77.05722°W / 38.88056; -77.05722 (Washington Boulevard Bridge) |
DC-43 |
New Boundary Channel Bridge |
1965 |
1994 |
George Washington Memorial Parkway southbound |
Boundary Channel |
38°52′51″N 77°03′32″W / 38.88083°N 77.05889°W / 38.88083; -77.05889 (New Boundary Channel Bridge) |
DC-44 |
Mount Vernon Bike Trail Bridge |
1987 |
1994 |
Mount Vernon Trail |
Boundary Channel |
38°53′24″N 77°03′50″W / 38.89000°N 77.06389°W / 38.89000; -77.06389 (Mount Vernon Bike Trail Bridge) |
DC-48 |
P Street Bridge |
1935 |
1992 |
P Street, NW |
Rock Creek and Rock Creek and Potomac Parkway |
38°54′35″N 77°03′01″W / 38.90972°N 77.05028°W / 38.90972; -77.05028 (P Street Bridge) |
DC-50 |
Long Bridge |
1903 |
1992 |
CSX Transportation and Amtrak |
Potomac River |
38°52′29″N 77°02′26″W / 38.87472°N 77.04056°W / 38.87472; -77.04056 (Long Bridge) |
DC-51 |
Francis Scott Key Bridge |
1923 |
1992 |
US 29 |
Potomac River |
38°54′08″N 77°04′13″W / 38.90222°N 77.07028°W / 38.90222; -77.07028 (Francis Scott Key Bridge) |
DC-53 |
New Harvard Street Bridge |
1965 |
1992 |
Harvard Street, NW |
Rock Creek |
38°55′41″N 77°02′40″W / 38.92806°N 77.04444°W / 38.92806; -77.04444 (New Harvard Street Bridge) |