US Bridges

15/29 Bypass Nbl over Mountain Run

Fair

Culpeper County, Virginia · 1.22 from 3 & 1.15 to 666 · Structure no. 000000000005589

Built
1971
54 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
42 ft
4 main spans
Daily traffic
14,060
2022 count
Owner
State
State Highway Agency

About this bridge

15/29 Bypass Nbl over Mountain Run is a concrete culvert carrying 15/29 Bypass Nbl over Mountain Run in Culpeper 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 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 14,060 vehicles a day, roughly 1% of them trucks, projected to reach 20,529 by 2045. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries15/29 Bypass Nbl
CrossesMountain Run
Location1.22 from 3 & 1.15 to 666
RouteU.S. Route 15
CountyCulpeper County
StateVirginia
Coordinates38.461, -77.96628
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 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 traffic14,060 (2022)
Projected traffic20,529 by 2045
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 15/29 Bypass Nbl over Mountain Run built?

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

What condition is 15/29 Bypass Nbl over Mountain 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 September 2023.

How much traffic does 15/29 Bypass Nbl over Mountain Run carry?

About 14,060 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is 15/29 Bypass Nbl over Mountain Run?

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

Who owns 15/29 Bypass Nbl over Mountain Run?

It is owned by the State Highway Agency.