US Bridges

Wyo 374 over I-80

Fair

Sweetwater County, Wyoming · Evanston - Green River · Structure no. CXU

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
247 ft
4 main spans
Daily traffic
3,065
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 374 over I-80 is a steel continuous stringer/multi-beam or girder carrying Wyo 374 over I-80 in Sweetwater County, Wyoming. It was built in 1967, so it is 58 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 3,065 vehicles a day, roughly 9% of them trucks, projected to reach 4,291 by 2043. The structure is 247 ft (75.4 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWyo 374
CrossesI-80
LocationEvanston - Green River
RouteState Highway 374
CountySweetwater County
StateWyoming
Coordinates41.5558, -109.59097
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.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating58.6 US tons
Inventory rating35.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length247 ft (75.4 m)
Longest span80 ft (24.4 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic3,065 (2024)
Projected traffic4,291 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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$245,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wyo 374 over I-80 built?

It was built in 1967, making it 58 years old in 2025.

What condition is Wyo 374 over I-80 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 June 2023.

How much traffic does Wyo 374 over I-80 carry?

About 3,065 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Wyo 374 over I-80?

The structure is 247 ft (75.4 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.

Who owns Wyo 374 over I-80?

It is owned by the State Highway Agency.