I-25 Sbl over North Fork Powder River
FairJohnson County, Wyoming · Kaycee - Buffalo · Structure no. AKN
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 140 ft
- 3 main spans
- Daily traffic
- 1,673
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Sbl over North Fork Powder River is a steel continuous stringer/multi-beam or girder carrying I-25 Sbl over North Fork Powder River in Johnson County, Wyoming. It was built in 1971, so it is 54 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 1,673 vehicles a day, roughly 23% of them trucks, projected to reach 2,342 by 2043. The structure is 140 ft (42.7 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-25 Sbl over North Fork Powder River built?
It was built in 1971, making it 54 years old in 2025.
What condition is I-25 Sbl over North Fork Powder River 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 March 2023.
How much traffic does I-25 Sbl over North Fork Powder River carry?
About 1,673 vehicles per day (2024 count), of which roughly 23% are trucks.
How long is I-25 Sbl over North Fork Powder River?
The structure is 140 ft (42.7 m) long with a longest span of 52 ft (15.9 m) and a deck 45 ft wide.
Who owns I-25 Sbl over North Fork Powder River?
It is owned by the State Highway Agency.