US Bridges

RTE.3171 over Wetlands

Good

Loudoun County, Virginia · .80FRRYANRD.20TOBELMTRDGE · Structure no. 000000000030409

Built
2004
21 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
150 ft
2 main spans
Daily traffic
10,638
2018 count
Owner
State
State Highway Agency

About this bridge

RTE.3171 over Wetlands is a concrete culvert carrying RTE.3171 over Wetlands in Loudoun County, Virginia. It was built in 2004, so it is 21 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 10,638 vehicles a day, roughly 4% of them trucks, projected to reach 1,400 by 2042. The structure is 150 ft (45.7 m) long.

CarriesRTE.3171
CrossesWetlands
Location.80FRRYANRD.20TOBELMTRDGE
RouteCounty Highway 3171
Coordinates38.99681, -77.53059
Functional classUrban Collector

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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating47 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic10,638 (2018)
Projected traffic1,400 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE.3171 over Wetlands built?

It was built in 2004, making it 21 years old in 2025.

What condition is RTE.3171 over Wetlands 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 June 2024.

How much traffic does RTE.3171 over Wetlands carry?

About 10,638 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is RTE.3171 over Wetlands?

The structure is 150 ft (45.7 m) long with a longest span of 10 ft (3 m).

Who owns RTE.3171 over Wetlands?

It is owned by the State Highway Agency.