STC4705;DOUMECQ RD over Salmon R;whitebird Truss
PoorIdaho County, Idaho · 1.3 S. 1.2 W. Whitebird · Structure no. 000000000029100
- Built
- 1935
- 90 years old, rebuilt 1987
- Condition
- Poor
- inspected March 2024
- Type
- Truss - Thru
- Steel
- Length
- 585 ft
- 3 main spans
- Daily traffic
- 550
- 2023 count
- Owner
- Local
- Other Local Agency
About this bridge
STC4705;DOUMECQ RD over Salmon R;whitebird Truss is a steel truss - thru carrying STC4705;DOUMECQ RD over Salmon R;whitebird Truss in Idaho County, Idaho. It was built in 1935 and reconstructed in 1987, so it is 90 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 550 vehicles a day, roughly 10% of them trucks, projected to reach 825 by 2042. The structure is 585 ft (178.3 m) long and 21 ft wide. If it were closed, the detour would be 65.2 mi (105 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was STC4705;DOUMECQ RD over Salmon R;whitebird Truss built?
It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1987.
What condition is STC4705;DOUMECQ RD over Salmon R;whitebird Truss 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 March 2024.
How much traffic does STC4705;DOUMECQ RD over Salmon R;whitebird Truss carry?
About 550 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is STC4705;DOUMECQ RD over Salmon R;whitebird Truss?
The structure is 585 ft (178.3 m) long with a longest span of 243 ft (74.1 m) and a deck 21 ft wide.
Who owns STC4705;DOUMECQ RD over Salmon R;whitebird Truss?
It is owned by the Other Local Agency.