US Bridges

Rock Creek & Potom over NPS Storage Area

Fair

District of Columbia, District of Columbia · 0.1 Miles West of Lincoln · Structure no. 3400036P0000000

Built
1934
91 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete
Length
932 ft
36 main spans
Daily traffic
13,383
2007 count
Owner
Federal
National Park Service

About this bridge

Rock Creek & Potom over NPS Storage Area is a concrete tee beam carrying Rock Creek & Potom over NPS Storage Area in District of Columbia, District of Columbia. It was built in 1934, so it is 91 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 13,383 vehicles a day, roughly 1% of them trucks, projected to reach 14,721 by 2027. The structure is 932 ft (284.1 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRock Creek & Potom
CrossesNPS Storage Area
Location0.1 Miles West of Lincoln
RouteCity Street 17
CountyDistrict of Columbia
StateDistrict of Columbia
Coordinates38.89081, -77.05344
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans36
Design loadUnknown
Structure length932 ft (284.1 m)
Longest span25 ft (7.6 m)
Deck width67 ft (20.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,383 (2007)
Projected traffic14,721 by 2027
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$17,000 (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rock Creek & Potom over NPS Storage Area built?

It was built in 1934, making it 91 years old in 2025.

What condition is Rock Creek & Potom over NPS Storage Area 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 April 2023.

How much traffic does Rock Creek & Potom over NPS Storage Area carry?

About 13,383 vehicles per day (2007 count), of which roughly 1% are trucks.

How long is Rock Creek & Potom over NPS Storage Area?

The structure is 932 ft (284.1 m) long with a longest span of 25 ft (7.6 m) and a deck 67 ft wide.

Who owns Rock Creek & Potom over NPS Storage Area?

It is owned by the National Park Service.