SH 75 over Salmon River;e. Clayton
GoodCuster County, Idaho · 5 E. Clayton · Structure no. 000000000017796
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 263 ft
- 3 main spans
- Daily traffic
- 600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 75 over Salmon River;e. Clayton is a prestressed concrete stringer/multi-beam or girder carrying SH 75 over Salmon River;e. Clayton in Custer County, Idaho. It was built in 2014, so it is 11 years old, younger than the Idaho average of 45.3 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 600 vehicles a day, roughly 18% of them trucks, projected to reach 900 by 2042. The structure is 263 ft (80.2 m) long and 44 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 75 over Salmon River;e. Clayton built?
It was built in 2014, making it 11 years old in 2025.
What condition is SH 75 over Salmon River;e. Clayton 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 October 2024.
How much traffic does SH 75 over Salmon River;e. Clayton carry?
About 600 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is SH 75 over Salmon River;e. Clayton?
The structure is 263 ft (80.2 m) long with a longest span of 118 ft (36 m) and a deck 44 ft wide.
Who owns SH 75 over Salmon River;e. Clayton?
It is owned by the State Highway Agency.