I-25 Nbl and Sbl over Six Mile Creek
FairConverse County, Wyoming · Douglas - Casper · Structure no. AGD
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected April 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 33 ft
- 3 main spans
- Daily traffic
- 4,762
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Nbl and Sbl over Six Mile Creek is a concrete continuous culvert carrying I-25 Nbl and Sbl over Six Mile Creek in Converse County, Wyoming. It was built in 1961, so it is 64 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 4,762 vehicles a day, roughly 19% of them trucks, projected to reach 6,667 by 2043. The structure is 33 ft (10.2 m) long. 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-25 Nbl and Sbl over Six Mile Creek built?
It was built in 1961, making it 64 years old in 2025.
What condition is I-25 Nbl and Sbl over Six Mile 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 April 2023.
How much traffic does I-25 Nbl and Sbl over Six Mile Creek carry?
About 4,762 vehicles per day (2024 count), of which roughly 19% are trucks.
How long is I-25 Nbl and Sbl over Six Mile Creek?
The structure is 33 ft (10.2 m) long with a longest span of 12 ft (3.6 m).
Who owns I-25 Nbl and Sbl over Six Mile Creek?
It is owned by the State Highway Agency.