SH 75 over Big Wood River
GoodBlaine County, Idaho · 7.8 N. Ketchum · Structure no. 000000000017686
- Built
- 1991
- 34 years old, rebuilt 2003
- Condition
- Good
- inspected July 2022
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 119 ft
- 1 main span
- Daily traffic
- 1,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 75 over Big Wood River is a prestressed concrete tee beam carrying SH 75 over Big Wood River in Blaine County, Idaho. It was built in 1991 and reconstructed in 2003, so it is 34 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 1,400 vehicles a day, roughly 11% of them trucks, projected to reach 2,100 by 2042. The structure is 119 ft (36.3 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 | 7 Good | Some minor problems. |
| 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 SH 75 over Big Wood River built?
It was built in 1991, making it 34 years old in 2025. It was reconstructed in 2003.
What condition is SH 75 over Big Wood 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 2022.
How much traffic does SH 75 over Big Wood River carry?
About 1,400 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is SH 75 over Big Wood River?
The structure is 119 ft (36.3 m) long with a longest span of 115 ft (35.1 m) and a deck 44 ft wide.
Who owns SH 75 over Big Wood River?
It is owned by the State Highway Agency.