US Bridges

Kanawha Trail over Dunlap Creek

Fair

Alleghany County, Virginia · 0.12 to 604 & 3.35 to 159 · Structure no. 000000000001054

Built
1936
89 years old, rebuilt 1977
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
126 ft
2 main spans
Daily traffic
635
2022 count
Owner
State
State Highway Agency

About this bridge

Kanawha Trail over Dunlap Creek is a steel continuous stringer/multi-beam or girder carrying Kanawha Trail over Dunlap Creek in Alleghany County, Virginia. It was built in 1936 and reconstructed in 1977, so it is 89 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 635 vehicles a day, roughly 1% of them trucks, projected to reach 708 by 2045. The structure is 126 ft (38.4 m) long and 34 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

CarriesKanawha Trail
CrossesDunlap Creek
Location0.12 to 604 & 3.35 to 159
RouteState Highway 311
Coordinates37.67926, -80.23247
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length126 ft (38.4 m)
Longest span61 ft (18.6 m)
Deck width34 ft (10.3 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic635 (2022)
Projected traffic708 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.9 mi (53 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 Kanawha Trail over Dunlap Creek built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1977.

What condition is Kanawha Trail over Dunlap Creek 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 November 2023.

How much traffic does Kanawha Trail over Dunlap Creek carry?

About 635 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Kanawha Trail over Dunlap Creek?

The structure is 126 ft (38.4 m) long with a longest span of 61 ft (18.6 m) and a deck 34 ft wide.

Who owns Kanawha Trail over Dunlap Creek?

It is owned by the State Highway Agency.