US Bridges

Back Mountain RD over Gap Run

Poor

Frederick County, Virginia · 0.01 to 50 - 2.00 to 600 · Structure no. 000000000008206

Built
1981
44 years old
Condition
Poor
inspected May 2024
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
5,164
2022 count
Owner
State
State Highway Agency

About this bridge

Back Mountain RD over Gap Run is a prestressed concrete slab carrying Back Mountain RD over Gap Run in Frederick County, Virginia. It was built in 1981, so it is 44 years old, younger than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,164 vehicles a day, projected to reach 7,168 by 2045. The structure is 40 ft (12.2 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBack Mountain RD
CrossesGap Run
Location0.01 to 50 - 2.00 to 600
RouteCounty Highway 614
CountyFrederick County
StateVirginia
Coordinates39.22178, -78.27697
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78 US tons
Inventory rating60 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,164 (2022)
Projected traffic7,168 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Back Mountain RD over Gap Run built?

It was built in 1981, making it 44 years old in 2025.

What condition is Back Mountain RD over Gap Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Back Mountain RD over Gap Run carry?

About 5,164 vehicles per day (2022 count).

How long is Back Mountain RD over Gap Run?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 33 ft wide.

Who owns Back Mountain RD over Gap Run?

It is owned by the State Highway Agency.