I-25 Nbl over Machinery Pass
FairLaramie County, Wyoming · Cheyenne - Chugwater · Structure no. ACC
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected January 2025
- Type
- Tee Beam
- Concrete Continuous
- Length
- 62 ft
- 3 main spans
- Daily traffic
- 3,363
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Nbl over Machinery Pass is a concrete continuous tee beam carrying I-25 Nbl over Machinery Pass in Laramie 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 3,363 vehicles a day, roughly 22% of them trucks, projected to reach 4,708 by 2043. The structure is 62 ft (18.9 m) long and 41 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 | 7 Good | Some minor problems. |
| 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 1968, making it 57 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 January 2025.
How much traffic does I-25 Nbl over Machinery Pass carry?
About 3,363 vehicles per day (2024 count), of which roughly 22% are trucks.
How long is I-25 Nbl over Machinery Pass?
The structure is 62 ft (18.9 m) long with a longest span of 24 ft (7.2 m) and a deck 41 ft wide.
Who owns I-25 Nbl over Machinery Pass?
It is owned by the State Highway Agency.