US Bridges

Southwest Freeway over South Capitol Street

Fair

District of Columbia, District of Columbia · S Capitol ST & SW Fre · Structure no. 1104(RAMP D)

Built
1963
62 years old, rebuilt 1991
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
522 ft
4 main spans
Daily traffic
25,000
2007 count
Owner
State
State Highway Agency

About this bridge

Southwest Freeway over South Capitol Street is a steel stringer/multi-beam or girder carrying Southwest Freeway over South Capitol Street in District of Columbia, District of Columbia. It was built in 1963 and reconstructed in 1991, so it is 62 years old, younger 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 25,000 vehicles a day, roughly 5% of them trucks, projected to reach 20,000 by 2015. The structure is 522 ft (159.1 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSouthwest Freeway
CrossesSouth Capitol Street
LocationS Capitol ST & SW Fre
RouteInterstate 695
Coordinates38.88165, -77.00843
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating43 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length522 ft (159.1 m)
Longest span214 ft (65.2 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,000 (2007)
Projected traffic20,000 by 2015
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Southwest Freeway over South Capitol Street built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1991.

What condition is Southwest Freeway 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 January 2023.

How much traffic does Southwest Freeway over South Capitol Street carry?

About 25,000 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is Southwest Freeway over South Capitol Street?

The structure is 522 ft (159.1 m) long with a longest span of 214 ft (65.2 m) and a deck 36 ft wide.

Who owns Southwest Freeway over South Capitol Street?

It is owned by the State Highway Agency.