US Bridges

I-90 Wbl over Tongue River

Fair

Sheridan County, Wyoming · Montana Line - Sheridan · Structure no. BBA

Built
1960
65 years old, rebuilt 2004
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
313 ft
3 main spans
Daily traffic
3,925
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 Wbl over Tongue River is a steel continuous stringer/multi-beam or girder carrying I-90 Wbl over Tongue River in Sheridan County, Wyoming. It was built in 1960 and reconstructed in 2004, so it is 65 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 3,925 vehicles a day, roughly 22% of them trucks, projected to reach 5,495 by 2043. The structure is 313 ft (95.3 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-90 Wbl
CrossesTongue River
LocationMontana Line - Sheridan
RouteInterstate 90
CountySheridan County
StateWyoming
Coordinates44.90103, -107.02088
Functional classRural Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length313 ft (95.3 m)
Longest span119 ft (36.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,925 (2024)
Projected traffic5,495 by 2043
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-90 Wbl over Tongue River built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2004.

What condition is I-90 Wbl over Tongue 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 I-90 Wbl over Tongue River carry?

About 3,925 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is I-90 Wbl over Tongue River?

The structure is 313 ft (95.3 m) long with a longest span of 119 ft (36.3 m) and a deck 43 ft wide.

Who owns I-90 Wbl over Tongue River?

It is owned by the State Highway Agency.