US Bridges

Jefferson Drive N over 12th Street Expressway

Fair

District of Columbia, District of Columbia · The National Mall · Structure no. 0172-1

Built
1964
61 years old, rebuilt 2002
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
27,000
2018 count
Owner
State
State Highway Agency

About this bridge

Jefferson Drive N over 12th Street Expressway is a prestressed concrete box beam or girders - multiple carrying Jefferson Drive N over 12th Street Expressway in District of Columbia, District of Columbia. It was built in 1964 and reconstructed in 2002, so it is 61 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 27,000 vehicles a day, roughly 1% of them trucks, projected to reach 27,000 by 2027. The structure is 64 ft (19.5 m) long and 57 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesJefferson Drive N
Crosses12th Street Expressway
LocationThe National Mall
Coordinates38.88866, -77.02821
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span64 ft (19.5 m)
Deck width57 ft (17.4 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,000 (2018)
Projected traffic27,000 by 2027
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

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 Jefferson Drive N over 12th Street Expressway built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2002.

What condition is Jefferson Drive N over 12th Street Expressway 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 Jefferson Drive N over 12th Street Expressway carry?

About 27,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Jefferson Drive N over 12th Street Expressway?

The structure is 64 ft (19.5 m) long with a longest span of 64 ft (19.5 m) and a deck 57 ft wide.

Who owns Jefferson Drive N over 12th Street Expressway?

It is owned by the State Highway Agency.