US Bridges

Bois Avenue over Wolftrap Creek

Good

Fairfax County, Virginia · 00.15FR.3810/00.08TO6038 · Structure no. 000000000006974

Built
1977
48 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
42 ft
4 main spans
Daily traffic
587
2002 count
Owner
State
State Highway Agency

About this bridge

Bois Avenue over Wolftrap Creek is a concrete culvert carrying Bois Avenue over Wolftrap Creek in Fairfax County, Virginia. It was built in 1977, so it is 48 years old, younger 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 587 vehicles a day, projected to reach 713 by 2045. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBois Avenue
CrossesWolftrap Creek
Location00.15FR.3810/00.08TO6038
RouteCounty Highway 3203
Coordinates38.93199, -77.26308
Functional classUrban Local

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic587 (2002)
Projected traffic713 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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$150 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bois Avenue over Wolftrap Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Bois Avenue over Wolftrap Creek 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 April 2023.

How much traffic does Bois Avenue over Wolftrap Creek carry?

About 587 vehicles per day (2002 count).

How long is Bois Avenue over Wolftrap Creek?

The structure is 42 ft (12.8 m) long with a longest span of 10 ft (3 m).

Who owns Bois Avenue over Wolftrap Creek?

It is owned by the State Highway Agency.