Southwest Freeway over 4th Street S.W.
FairDistrict of Columbia, District of Columbia · Southwest Frwy & 4th · Structure no. 1100
- Built
- 1959
- 66 years old, rebuilt 1991
- Condition
- Fair
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 75 ft
- 1 main span
- Daily traffic
- 173,000
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
Southwest Freeway over 4th Street S.W. is a prestressed concrete box beam or girders - multiple carrying Southwest Freeway over 4th Street S.W. in District of Columbia, District of Columbia. It was built in 1959 and reconstructed in 1991, 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 6 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 173,000 vehicles a day, roughly 5% of them trucks, projected to reach 173,000 by 2027. The structure is 75 ft (22.9 m) long and 155 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Southwest Freeway over 4th Street S.W. built?
It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1991.
What condition is Southwest Freeway over 4th Street 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 January 2024.
How much traffic does Southwest Freeway over 4th Street S.W. carry?
About 173,000 vehicles per day (2018 count), of which roughly 5% are trucks.
How long is Southwest Freeway over 4th Street S.W.?
The structure is 75 ft (22.9 m) long with a longest span of 72 ft (21.9 m) and a deck 155 ft wide.
Who owns Southwest Freeway over 4th Street S.W.?
It is owned by the State Highway Agency.