US 18 over Stockpass
GoodNiobrara County, Wyoming · Orin Jct-Lusk · Structure no. HTF
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected January 2025
- Type
- Culvert
- Steel
- Length
- 30 ft
- 2 main spans
- Daily traffic
- 2,406
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 18 over Stockpass is a steel culvert carrying US 18 over Stockpass in Niobrara 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 2,406 vehicles a day, roughly 17% of them trucks, projected to reach 3,368 by 2043. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 46 mi (74 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 18 over Stockpass built?
It was built in 1970, making it 55 years old in 2025.
What condition is US 18 over Stockpass 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 January 2025.
How much traffic does US 18 over Stockpass carry?
About 2,406 vehicles per day (2024 count), of which roughly 17% are trucks.
How long is US 18 over Stockpass?
The structure is 30 ft (9.1 m) long with a longest span of 13 ft (4 m).
Who owns US 18 over Stockpass?
It is owned by the State Highway Agency.