M Street S.W. over South Capitol Street
FairDistrict of Columbia, District of Columbia · M Street & S. Capitol · Structure no. 0011
- Built
- 1959
- 66 years old, rebuilt 1988
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 65 ft
- 1 main span
- Daily traffic
- 20,500
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
M Street S.W. over South Capitol Street is a steel stringer/multi-beam or girder carrying M Street S.W. over South Capitol Street in District of Columbia, District of Columbia. It was built in 1959 and reconstructed in 1988, so it is 66 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 20,500 vehicles a day, roughly 2% of them trucks, projected to reach 22,000 by 2026. The structure is 65 ft (19.8 m) long and 112 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M Street S.W. over South Capitol Street built?
It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1988.
What condition is M Street S.W. over South Capitol Street 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 December 2023.
How much traffic does M Street S.W. over South Capitol Street carry?
About 20,500 vehicles per day (2007 count), of which roughly 2% are trucks.
How long is M Street S.W. over South Capitol Street?
The structure is 65 ft (19.8 m) long with a longest span of 62 ft (18.9 m) and a deck 112 ft wide.
Who owns M Street S.W. over South Capitol Street?
It is owned by the State Highway Agency.