US Bridges

Gwmp over Windy Run

Fair

Arlington County, Virginia · 7.1 Miles South of I-495. · Structure no. 3300009P0000000

Built
1959
66 years old, rebuilt 1982
Condition
Fair
inspected April 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
388 ft
4 main spans
Daily traffic
27,400
2007 count
Owner
Federal
National Park Service

About this bridge

Gwmp over Windy Run is a steel continuous girder and floorbeam system carrying Gwmp over Windy Run in Arlington County, Virginia. It was built in 1959 and reconstructed in 1982, so it is 66 years old, older than the Virginia average of 50.7 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 27,400 vehicles a day, roughly 1% of them trucks, projected to reach 30,140 by 2027. The structure is 388 ft (118.3 m) long and 68 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesGwmp
CrossesWindy Run
Location7.1 Miles South of I-495.
RouteFederal Lands Road 1
CountyArlington County
StateVirginia
Coordinates38.90514, -77.09406
Functional classUrban Other Principal 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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length388 ft (118.3 m)
Longest span106 ft (32.3 m)
Deck width68 ft (20.7 m)
Roadway width63 ft (19.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,400 (2007)
Projected traffic30,140 by 2027
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

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$153,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Gwmp over Windy Run built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1982.

What condition is Gwmp over Windy Run 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 Gwmp over Windy Run carry?

About 27,400 vehicles per day (2007 count), of which roughly 1% are trucks.

How long is Gwmp over Windy Run?

The structure is 388 ft (118.3 m) long with a longest span of 106 ft (32.3 m) and a deck 68 ft wide.

Who owns Gwmp over Windy Run?

It is owned by the National Park Service.