US Bridges

I-90 Wbl over Butler Speath Road

Fair

Campbell County, Wyoming · Gillette Marginal · Structure no. CYN

Built
1971
54 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
136 ft
3 main spans
Daily traffic
3,771
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 Wbl over Butler Speath Road is a concrete continuous tee beam carrying I-90 Wbl over Butler Speath Road in Campbell County, Wyoming. It was built in 1971, so it is 54 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 5 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 3,771 vehicles a day, roughly 12% of them trucks, projected to reach 5,279 by 2043. The structure is 136 ft (41.5 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-90 Wbl
CrossesButler Speath Road
LocationGillette Marginal
RouteInterstate 90
CountyCampbell County
StateWyoming
Coordinates44.27994, -105.4791
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating31.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length136 ft (41.5 m)
Longest span59 ft (18 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,771 (2024)
Projected traffic5,279 by 2043
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 Wbl over Butler Speath Road built?

It was built in 1971, making it 54 years old in 2025.

What condition is I-90 Wbl over Butler Speath 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 May 2023.

How much traffic does I-90 Wbl over Butler Speath Road carry?

About 3,771 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is I-90 Wbl over Butler Speath Road?

The structure is 136 ft (41.5 m) long with a longest span of 59 ft (18 m) and a deck 45 ft wide.

Who owns I-90 Wbl over Butler Speath Road?

It is owned by the State Highway Agency.