US Bridges

Trap Road over Wolftrap Run

Good

Fairfax County, Virginia · 00.70 3810 / 00.25 5020 · Structure no. 000000000006834

Built
1971
54 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
48 ft
4 main spans
Daily traffic
3,544
2022 count
Owner
State
State Highway Agency

About this bridge

Trap Road over Wolftrap Run is a concrete culvert carrying Trap Road over Wolftrap Run in Fairfax County, Virginia. It was built in 1971, so it is 54 years old, older than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,544 vehicles a day, roughly 1% of them trucks, projected to reach 3,588 by 2045. The structure is 48 ft (14.6 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesTrap Road
CrossesWolftrap Run
Location00.70 3810 / 00.25 5020
RouteCounty Highway 676
CountyFairfax County
StateVirginia
Coordinates38.94091, -77.26707
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating77.1 US tons
Inventory rating46 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,544 (2022)
Projected traffic3,588 by 2045
Trucks1%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Trap Road over Wolftrap Run built?

It was built in 1971, making it 54 years old in 2025.

What condition is Trap Road over Wolftrap Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does Trap Road over Wolftrap Run carry?

About 3,544 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Trap Road over Wolftrap Run?

The structure is 48 ft (14.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Trap Road over Wolftrap Run?

It is owned by the State Highway Agency.