I-25 Nbl over Wyo 387
FairNatrona County, Wyoming · Casper - Kaycee · Structure no. DFL
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected March 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 157 ft
- 3 main spans
- Daily traffic
- 1,749
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Nbl over Wyo 387 is a concrete continuous tee beam carrying I-25 Nbl over Wyo 387 in Natrona County, Wyoming. It was built in 1980, so it is 45 years old, younger 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 1,749 vehicles a day, roughly 33% of them trucks, projected to reach 2,449 by 2043. The structure is 157 ft (47.9 m) long and 45 ft wide.
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 Nbl over Wyo 387 built?
It was built in 1980, making it 45 years old in 2025.
What condition is I-25 Nbl over Wyo 387 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 Wyo 387 carry?
About 1,749 vehicles per day (2024 count), of which roughly 33% are trucks.
How long is I-25 Nbl over Wyo 387?
The structure is 157 ft (47.9 m) long with a longest span of 61 ft (18.6 m) and a deck 45 ft wide.
Who owns I-25 Nbl over Wyo 387?
It is owned by the State Highway Agency.