US Bridges

Trap Road over Pedestrian Underpass

Good

Fairfax County, Virginia · 00.50FR3810/00.45TO5020 · Structure no. 000000000006838

Built
1973
52 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
3,544
2022 count
Owner
State
State Highway Agency

About this bridge

Trap Road over Pedestrian Underpass is a concrete culvert carrying Trap Road over Pedestrian Underpass in Fairfax County, Virginia. It was built in 1973, so it is 52 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 22 ft (6.7 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesTrap Road
CrossesPedestrian Underpass
Location00.50FR3810/00.45TO5020
RouteCounty Highway 676
Coordinates38.93887, -77.26717
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
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 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
CrossesPedestrian / bicycle
Detour if closed5 mi (8 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$100 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Trap Road over Pedestrian Underpass built?

It was built in 1973, making it 52 years old in 2025.

What condition is Trap Road over Pedestrian Underpass 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 May 2023.

How much traffic does Trap Road over Pedestrian Underpass carry?

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

How long is Trap Road over Pedestrian Underpass?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m).

Who owns Trap Road over Pedestrian Underpass?

It is owned by the State Highway Agency.