Custer Motorway over Yankee Fork
PoorCuster County, Idaho · No Data Entered · Structure no. 040603000001107
- Built
- 1992
- 33 years old, rebuilt 1999
- Condition
- Poor
- inspected October 2023
- Type
- Girder and Floorbeam System
- Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 100
- 1994 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
Custer Motorway over Yankee Fork is a concrete girder and floorbeam system carrying Custer Motorway over Yankee Fork in Custer County, Idaho. It was built in 1992 and reconstructed in 1999, so it is 33 years old, younger 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 125 by 2015. The structure is 30 ft (9.1 m) long and 18 ft wide. If it were closed, the detour would be 94.4 mi (152 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 Custer Motorway over Yankee Fork built?
It was built in 1992, making it 33 years old in 2025. It was reconstructed in 1999.
What condition is Custer Motorway over Yankee Fork 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 October 2023.
How much traffic does Custer Motorway over Yankee Fork carry?
About 100 vehicles per day (1994 count), of which roughly 10% are trucks.
How long is Custer Motorway over Yankee Fork?
The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 18 ft wide.
Who owns Custer Motorway over Yankee Fork?
It is owned by the U.S. Forest Service.