Wyo 257 over North Platte River
FairNatrona County, Wyoming · Casper Streets · Structure no. MBT
- Built
- 2013
- 12 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 505 ft
- 3 main spans
- Daily traffic
- 1,073
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Wyo 257 over North Platte River is a steel continuous stringer/multi-beam or girder carrying Wyo 257 over North Platte River in Natrona County, Wyoming. It was built in 2013, so it is 12 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 1,073 vehicles a day, roughly 37% of them trucks, projected to reach 1,502 by 2043. The structure is 505 ft (153.9 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Wyo 257 over North Platte River built?
It was built in 2013, making it 12 years old in 2025.
What condition is Wyo 257 over North Platte River 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 2024.
How much traffic does Wyo 257 over North Platte River carry?
About 1,073 vehicles per day (2024 count), of which roughly 37% are trucks.
How long is Wyo 257 over North Platte River?
The structure is 505 ft (153.9 m) long with a longest span of 215 ft (65.5 m) and a deck 43 ft wide.
Who owns Wyo 257 over North Platte River?
It is owned by the State Highway Agency.