I-25 Sbl over Middle Fork Powder River
GoodJohnson County, Wyoming · Kaycee Marginal · Structure no. AKI
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 196 ft
- 3 main spans
- Daily traffic
- 1,673
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Sbl over Middle Fork Powder River is a steel continuous stringer/multi-beam or girder carrying I-25 Sbl over Middle Fork Powder River in Johnson County, Wyoming. It was built in 1970, so it is 55 years old, older than the Wyoming average of 48.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,673 vehicles a day, roughly 23% of them trucks, projected to reach 2,342 by 2043. The structure is 196 ft (59.7 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 Middle Fork Powder River built?
It was built in 1970, making it 55 years old in 2025.
What condition is I-25 Sbl over Middle Fork Powder River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.
How much traffic does I-25 Sbl over Middle 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 Middle Fork Powder River?
The structure is 196 ft (59.7 m) long with a longest span of 75 ft (22.9 m) and a deck 51 ft wide.
Who owns I-25 Sbl over Middle Fork Powder River?
It is owned by the State Highway Agency.