I-25 Nbl over Murphy Creek
FairJohnson County, Wyoming · Casper - Kaycee · Structure no. AKA
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 142 ft
- 3 main spans
- Daily traffic
- 1,749
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Nbl over Murphy Creek is a steel continuous stringer/multi-beam or girder carrying I-25 Nbl over Murphy Creek in Johnson County, Wyoming. It was built in 1960, so it is 65 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 5 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 142 ft (43.3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 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 Murphy Creek built?
It was built in 1960, making it 65 years old in 2025.
What condition is I-25 Nbl over Murphy Creek 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 Nbl over Murphy Creek carry?
About 1,749 vehicles per day (2024 count), of which roughly 33% are trucks.
How long is I-25 Nbl over Murphy Creek?
The structure is 142 ft (43.3 m) long with a longest span of 53 ft (16.2 m) and a deck 41 ft wide.
Who owns I-25 Nbl over Murphy Creek?
It is owned by the State Highway Agency.