US Bridges

Wyo 789 over Little Wind River

Fair

Fremont County, Wyoming · Lander - Riverton · Structure no. DBH

Built
1976
49 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
232 ft
3 main spans
Daily traffic
3,637
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 789 over Little Wind River is a steel continuous stringer/multi-beam or girder carrying Wyo 789 over Little Wind River in Fremont County, Wyoming. It was built in 1976, so it is 49 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 3,637 vehicles a day, roughly 7% of them trucks, projected to reach 5,092 by 2043. The structure is 232 ft (70.7 m) long and 79 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesWyo 789
CrossesLittle Wind River
LocationLander - Riverton
RouteState Highway 789
StateWyoming
Coordinates42.99377, -108.38555
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.9 US tons
Inventory rating34.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span90 ft (27.3 m)
Deck width79 ft (24.2 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,637 (2024)
Projected traffic5,092 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes

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 789 over Little Wind River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Wyo 789 over Little Wind 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 August 2023.

How much traffic does Wyo 789 over Little Wind River carry?

About 3,637 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Wyo 789 over Little Wind River?

The structure is 232 ft (70.7 m) long with a longest span of 90 ft (27.3 m) and a deck 79 ft wide.

Who owns Wyo 789 over Little Wind River?

It is owned by the State Highway Agency.