US Bridges

I-90 Wbl over Upper Prairie Dog Road

Fair

Sheridan County, Wyoming · Sheridan - Buffalo · Structure no. BCK

Built
1968
57 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
138 ft
3 main spans
Daily traffic
3,579
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 Wbl over Upper Prairie Dog Road is a concrete continuous tee beam carrying I-90 Wbl over Upper Prairie Dog Road in Sheridan County, Wyoming. It was built in 1968, so it is 57 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 3,579 vehicles a day, roughly 24% of them trucks, projected to reach 5,011 by 2043. The structure is 138 ft (42.1 m) long and 41 ft wide.

CarriesI-90 Wbl
CrossesUpper Prairie Dog Road
LocationSheridan - Buffalo
RouteInterstate 90
StateWyoming
Coordinates44.61952, -106.84843
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating38.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length138 ft (42.1 m)
Longest span56 ft (17.1 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,579 (2024)
Projected traffic5,011 by 2043
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 Wbl over Upper Prairie Dog Road built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-90 Wbl over Upper Prairie Dog Road 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 Upper Prairie Dog Road carry?

About 3,579 vehicles per day (2024 count), of which roughly 24% are trucks.

How long is I-90 Wbl over Upper Prairie Dog Road?

The structure is 138 ft (42.1 m) long with a longest span of 56 ft (17.1 m) and a deck 41 ft wide.

Who owns I-90 Wbl over Upper Prairie Dog Road?

It is owned by the State Highway Agency.