I-25 Sbl over Machinery Pass
FairJohnson County, Wyoming · Buffalo Marginal · Structure no. ALZ
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 84 ft
- 3 main spans
- Daily traffic
- 1,765
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Sbl over Machinery Pass is a concrete continuous slab carrying I-25 Sbl over Machinery Pass in Johnson County, Wyoming. It was built in 1963, so it is 62 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 1,765 vehicles a day, roughly 30% of them trucks, projected to reach 2,471 by 2043. The structure is 84 ft (25.6 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-25 Sbl over Machinery Pass built?
It was built in 1963, making it 62 years old in 2025.
What condition is I-25 Sbl 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 May 2024.
How much traffic does I-25 Sbl over Machinery Pass carry?
About 1,765 vehicles per day (2024 count), of which roughly 30% are trucks.
How long is I-25 Sbl over Machinery Pass?
The structure is 84 ft (25.6 m) long with a longest span of 35 ft (10.7 m) and a deck 45 ft wide.
Who owns I-25 Sbl over Machinery Pass?
It is owned by the State Highway Agency.