I-90 Wbl over Machinery Pass
FairSheridan County, Wyoming · Montana Line - Sheridan · Structure no. EVE
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected August 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 75 ft
- 3 main spans
- Daily traffic
- 2,158
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-90 Wbl over Machinery Pass is a concrete continuous tee beam carrying I-90 Wbl over Machinery Pass in Sheridan County, Wyoming. It was built in 1983, so it is 42 years old, younger 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 2,158 vehicles a day, roughly 27% of them trucks, projected to reach 3,021 by 2043. The structure is 75 ft (22.9 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-90 Wbl over Machinery Pass built?
It was built in 1983, making it 42 years old in 2025.
What condition is I-90 Wbl over Machinery Pass 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 Machinery Pass carry?
About 2,158 vehicles per day (2024 count), of which roughly 27% are trucks.
How long is I-90 Wbl over Machinery Pass?
The structure is 75 ft (22.9 m) long with a longest span of 31 ft (9.4 m) and a deck 45 ft wide.
Who owns I-90 Wbl over Machinery Pass?
It is owned by the State Highway Agency.