I-90 Wbl over Machinery Pass
PoorCampbell County, Wyoming · Gillette - Moorcroft · Structure no. CDL
- Built
- 1976
- 49 years old
- Condition
- Poor
- inspected May 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 145 ft
- 3 main spans
- Daily traffic
- 3,932
- 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 Campbell 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 3,932 vehicles a day, roughly 15% of them trucks, projected to reach 5,505 by 2043. The structure is 145 ft (44.2 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 1976, making it 49 years old in 2025.
What condition is I-90 Wbl over Machinery Pass in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.
How much traffic does I-90 Wbl over Machinery Pass carry?
About 3,932 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is I-90 Wbl over Machinery Pass?
The structure is 145 ft (44.2 m) long with a longest span of 57 ft (17.4 m) and a deck 45 ft wide.
Who owns I-90 Wbl over Machinery Pass?
It is owned by the State Highway Agency.