US Bridges

Wyo 374 over Blacks Fork River

Fair

Sweetwater County, Wyoming · 8 MI E of Little America · Structure no. BKC

Built
1946
79 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
254 ft
3 main spans
Daily traffic
1,126
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 374 over Blacks Fork River is a steel continuous stringer/multi-beam or girder carrying Wyo 374 over Blacks Fork River in Sweetwater County, Wyoming. It was built in 1946, so it is 79 years old, older 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 1,126 vehicles a day, roughly 9% of them trucks, projected to reach 1,576 by 2043. The structure is 254 ft (77.4 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWyo 374
CrossesBlacks Fork River
Location8 MI E of Little America
RouteState Highway 374
CountySweetwater County
StateWyoming
Coordinates41.54553, -109.69395
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length254 ft (77.4 m)
Longest span65 ft (19.8 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic1,126 (2024)
Projected traffic1,576 by 2043
Trucks9%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 374 over Blacks Fork River built?

It was built in 1946, making it 79 years old in 2025.

What condition is Wyo 374 over Blacks 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 February 2024.

How much traffic does Wyo 374 over Blacks Fork River carry?

About 1,126 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Wyo 374 over Blacks Fork River?

The structure is 254 ft (77.4 m) long with a longest span of 65 ft (19.8 m) and a deck 33 ft wide.

Who owns Wyo 374 over Blacks Fork River?

It is owned by the State Highway Agency.