SR 261 over Snake River
PoorColumbia County, Washington · 14.8 N JCT US 12 · Structure no. 0008390A0000000
- Built
- 1927
- 98 years old, rebuilt 1968
- Condition
- Poor
- inspected October 2024
- Type
- Truss - Thru
- Steel Continuous
- Length
- 2,040 ft
- 3 main spans
- Daily traffic
- 485
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 261 over Snake River is a steel continuous truss - thru carrying SR 261 over Snake River in Columbia County, Washington. It was built in 1927 and reconstructed in 1968, so it is 98 years old, older than the Washington average of 49.8 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 485 vehicles a day, roughly 18% of them trucks, projected to reach 471 by 2039. The structure is 2,040 ft (621.8 m) long and 22 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 261 over Snake River built?
It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1968.
What condition is SR 261 over Snake River 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 2024.
How much traffic does SR 261 over Snake River carry?
About 485 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is SR 261 over Snake River?
The structure is 2,040 ft (621.8 m) long with a longest span of 520 ft (158.5 m) and a deck 22 ft wide.
Who owns SR 261 over Snake River?
It is owned by the State Highway Agency.