US Bridges

14th Street S.W. over Maine Avenue S.W.

Fair

District of Columbia, District of Columbia · 14th ST over Maine Ave SW · Structure no. 0171-1

Built
1942
83 years old, rebuilt 1982
Condition
Fair
inspected May 2024
Type
Frame
Concrete
Length
345 ft
2 main spans
Daily traffic
35,000
2018 count
Owner
State
State Highway Agency

About this bridge

14th Street S.W. over Maine Avenue S.W. is a concrete frame carrying 14th Street S.W. over Maine Avenue S.W. in District of Columbia, District of Columbia. It was built in 1942 and reconstructed in 1982, so it is 83 years old, older than the District of Columbia average of 63.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 35,000 vehicles a day, roughly 4% of them trucks, projected to reach 60,000 by 2027. The structure is 345 ft (105.2 m) long and 87 ft wide.

Carries14th Street S.W.
CrossesMaine Avenue S.W.
Location14th ST over Maine Ave SW
RouteU.S. Route 0US1
Coordinates38.88411, -77.03199
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.1 US tons
Inventory rating34.2 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2 (+10 approach)
Design loadHS 20
Structure length345 ft (105.2 m)
Longest span45 ft (13.7 m)
Deck width87 ft (26.5 m)
Roadway width82 ft (25.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,000 (2018)
Projected traffic60,000 by 2027
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was 14th Street S.W. over Maine Avenue S.W. built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1982.

What condition is 14th Street S.W. over Maine Avenue S.W. in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does 14th Street S.W. over Maine Avenue S.W. carry?

About 35,000 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is 14th Street S.W. over Maine Avenue S.W.?

The structure is 345 ft (105.2 m) long with a longest span of 45 ft (13.7 m) and a deck 87 ft wide.

Who owns 14th Street S.W. over Maine Avenue S.W.?

It is owned by the State Highway Agency.