SH 75 over Yankee Fk of Salmon Rivr
PoorCuster County, Idaho · 1.0 E. Sunbeam · Structure no. 000000000017780
- Built
- 1934
- 91 years old
- Condition
- Poor
- inspected July 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 200 ft
- 5 main spans
- Daily traffic
- 680
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 75 over Yankee Fk of Salmon Rivr is a concrete continuous tee beam carrying SH 75 over Yankee Fk of Salmon Rivr in Custer County, Idaho. It was built in 1934, so it is 91 years old, older than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 680 vehicles a day, roughly 15% of them trucks, projected to reach 1,020 by 2042. The structure is 200 ft (61 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 75 over Yankee Fk of Salmon Rivr built?
It was built in 1934, making it 91 years old in 2025.
What condition is SH 75 over Yankee Fk of Salmon Rivr in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does SH 75 over Yankee Fk of Salmon Rivr carry?
About 680 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is SH 75 over Yankee Fk of Salmon Rivr?
The structure is 200 ft (61 m) long with a longest span of 45 ft (13.7 m) and a deck 27 ft wide.
Who owns SH 75 over Yankee Fk of Salmon Rivr?
It is owned by the State Highway Agency.