US Bridges

Wv Route 39 over Knapp Creek

Good

Pocahontas County, West Virginia · 0.03 Mi. East JCT Wv 28 · Structure no. 00000000038A141

Built
2017
8 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
262 ft
2 main spans
Daily traffic
1,400
2022 count
Owner
State
State Highway Agency

About this bridge

Wv Route 39 over Knapp Creek is a steel continuous stringer/multi-beam or girder carrying Wv Route 39 over Knapp Creek in Pocahontas County, West Virginia. It was built in 2017, so it is 8 years old, younger than the West Virginia average of 44.7 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 1,400 vehicles a day, roughly 11% of them trucks, projected to reach 1,817 by 2042. The structure is 262 ft (80 m) long and 34 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

CarriesWv Route 39
CrossesKnapp Creek
Location0.03 Mi. East JCT Wv 28
RouteState Highway 3900
Coordinates38.19778, -80.02758
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating40 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length262 ft (80 m)
Longest span130 ft (39.6 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2022)
Projected traffic1,817 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 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 Wv Route 39 over Knapp Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Wv Route 39 over Knapp Creek 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 September 2023.

How much traffic does Wv Route 39 over Knapp Creek carry?

About 1,400 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Wv Route 39 over Knapp Creek?

The structure is 262 ft (80 m) long with a longest span of 130 ft (39.6 m) and a deck 34 ft wide.

Who owns Wv Route 39 over Knapp Creek?

It is owned by the State Highway Agency.