I-25 Nbl over Machinery Pass
FairJohnson County, Wyoming · Casper - Kaycee · Structure no. AJR
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected April 2024
- Type
- Slab
- Concrete Continuous
- Length
- 61 ft
- 3 main spans
- Daily traffic
- 1,749
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Nbl over Machinery Pass is a concrete continuous slab carrying I-25 Nbl over Machinery Pass in Johnson County, Wyoming. It was built in 1965, so it is 60 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 1,749 vehicles a day, roughly 33% of them trucks, projected to reach 2,449 by 2043. The structure is 61 ft (18.6 m) long and 40 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-25 Nbl over Machinery Pass built?
It was built in 1965, making it 60 years old in 2025.
What condition is I-25 Nbl 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 April 2024.
How much traffic does I-25 Nbl over Machinery Pass carry?
About 1,749 vehicles per day (2024 count), of which roughly 33% are trucks.
How long is I-25 Nbl over Machinery Pass?
The structure is 61 ft (18.6 m) long with a longest span of 25 ft (7.6 m) and a deck 40 ft wide.
Who owns I-25 Nbl over Machinery Pass?
It is owned by the State Highway Agency.