US Bridges

Wyo 351 over New Fork River

Fair

Sublette County, Wyoming · Big Piney Cutoff · Structure no. KFL

Built
1994
31 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
215 ft
3 main spans
Daily traffic
911
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 351 over New Fork River is a steel continuous stringer/multi-beam or girder carrying Wyo 351 over New Fork River in Sublette County, Wyoming. It was built in 1994, so it is 31 years old, younger than the Wyoming average of 48.4 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 911 vehicles a day, roughly 19% of them trucks, projected to reach 1,275 by 2043. The structure is 215 ft (65.5 m) long and 35 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesWyo 351
CrossesNew Fork River
LocationBig Piney Cutoff
RouteState Highway 351
CountySublette County
StateWyoming
Coordinates42.60534, -109.85611
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length215 ft (65.5 m)
Longest span84 ft (25.6 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic911 (2024)
Projected traffic1,275 by 2043
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$7,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 351 over New Fork River built?

It was built in 1994, making it 31 years old in 2025.

What condition is Wyo 351 over New Fork River 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 July 2024.

How much traffic does Wyo 351 over New Fork River carry?

About 911 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is Wyo 351 over New Fork River?

The structure is 215 ft (65.5 m) long with a longest span of 84 ft (25.6 m) and a deck 35 ft wide.

Who owns Wyo 351 over New Fork River?

It is owned by the State Highway Agency.