US Bridges

K Street N.W. over Potomac Pkwy

Fair

District of Columbia, District of Columbia · K ST over Potomac Pkwy NW · Structure no. 0036(POT. PKWY)

Built
1940
85 years old, rebuilt 1998
Condition
Fair
inspected June 2024
Type
Frame
Concrete
Length
79 ft
1 main span
Daily traffic
24,000
2018 count
Owner
State
State Highway Agency

About this bridge

K Street N.W. over Potomac Pkwy is a concrete frame carrying K Street N.W. over Potomac Pkwy in District of Columbia, District of Columbia. It was built in 1940 and reconstructed in 1998, so it is 85 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 24,000 vehicles a day, roughly 1% of them trucks, projected to reach 32,500 by 2027. The structure is 79 ft (24.1 m) long and 105 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesK Street N.W.
CrossesPotomac Pkwy
LocationK ST over Potomac Pkwy NW
RouteCity Street 0
Coordinates38.90254, -77.05704
Functional classUrban Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.5 US tons
Inventory rating44 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span69 ft (21 m)
Deck width105 ft (32.1 m)
Roadway width86 ft (26.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,000 (2018)
Projected traffic32,500 by 2027
Trucks1%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was K Street N.W. over Potomac Pkwy built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1998.

What condition is K Street N.W. over Potomac Pkwy 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 June 2024.

How much traffic does K Street N.W. over Potomac Pkwy carry?

About 24,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is K Street N.W. over Potomac Pkwy?

The structure is 79 ft (24.1 m) long with a longest span of 69 ft (21 m) and a deck 105 ft wide.

Who owns K Street N.W. over Potomac Pkwy?

It is owned by the State Highway Agency.