Wyo 59 over Little Powder River
GoodCampbell County, Wyoming · Gillette - Montana Sta · Structure no. KNX
- Built
- 2005
- 20 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 110 ft
- 3 main spans
- Daily traffic
- 1,336
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Wyo 59 over Little Powder River is a steel continuous stringer/multi-beam or girder carrying Wyo 59 over Little Powder River in Campbell County, Wyoming. It was built in 2005, so it is 20 years old, younger 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 1,336 vehicles a day, roughly 22% of them trucks, projected to reach 1,870 by 2043. The structure is 110 ft (33.5 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Wyo 59 over Little Powder River built?
It was built in 2005, making it 20 years old in 2025.
What condition is Wyo 59 over Little Powder River 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 July 2024.
How much traffic does Wyo 59 over Little Powder River carry?
About 1,336 vehicles per day (2024 count), of which roughly 22% are trucks.
How long is Wyo 59 over Little Powder River?
The structure is 110 ft (33.5 m) long with a longest span of 42 ft (12.8 m) and a deck 39 ft wide.
Who owns Wyo 59 over Little Powder River?
It is owned by the State Highway Agency.