US Bridges

Dunlap Creek Road over Tygers Creek

Fair

Alleghany County, Virginia · 2.30 to 717 & 0.10 to 311 · Structure no. 000000000001033

Built
1925
100 years old, rebuilt 1977
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
55 ft
2 main spans
Daily traffic
649
2022 count
Owner
State
State Highway Agency

About this bridge

Dunlap Creek Road over Tygers Creek is a concrete slab carrying Dunlap Creek Road over Tygers Creek in Alleghany County, Virginia. It was built in 1925 and reconstructed in 1977, so it is 100 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 649 vehicles a day, roughly 1% of them trucks, projected to reach 724 by 2042. The structure is 55 ft (16.7 m) long and 35 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

CarriesDunlap Creek Road
CrossesTygers Creek
Location2.30 to 717 & 0.10 to 311
RouteState Highway 159
Coordinates37.71962, -80.20076
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
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 rating98.5 US tons
Inventory rating78.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length55 ft (16.7 m)
Longest span27 ft (8.2 m)
Deck width35 ft (10.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic649 (2022)
Projected traffic724 by 2042
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 Dunlap Creek Road over Tygers Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1977.

What condition is Dunlap Creek Road over Tygers 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 March 2024.

How much traffic does Dunlap Creek Road over Tygers Creek carry?

About 649 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Dunlap Creek Road over Tygers Creek?

The structure is 55 ft (16.7 m) long with a longest span of 27 ft (8.2 m) and a deck 35 ft wide.

Who owns Dunlap Creek Road over Tygers Creek?

It is owned by the State Highway Agency.