Wyo 450 over N Prong Lttle Thunder CR
FairCampbell County, Wyoming · 8 Mi. SW of Wright · Structure no. NFD
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected November 2023
- Type
- Culvert
- Steel
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 1,479
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Wyo 450 over N Prong Lttle Thunder CR is a steel culvert carrying Wyo 450 over N Prong Lttle Thunder CR in Campbell County, Wyoming. It was built in 1978, so it is 47 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 1,479 vehicles a day, roughly 28% of them trucks, projected to reach 2,071 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 28 mi (45 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 | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Wyo 450 over N Prong Lttle Thunder CR built?
It was built in 1978, making it 47 years old in 2025.
What condition is Wyo 450 over N Prong Lttle Thunder CR 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 November 2023.
How much traffic does Wyo 450 over N Prong Lttle Thunder CR carry?
About 1,479 vehicles per day (2024 count), of which roughly 28% are trucks.
How long is Wyo 450 over N Prong Lttle Thunder CR?
The structure is 29 ft (8.8 m) long with a longest span of 12 ft (3.8 m).
Who owns Wyo 450 over N Prong Lttle Thunder CR?
It is owned by the State Highway Agency.