US 12 over Tucannon River
PoorColumbia County, Washington · 21.0 E Walla Wal CO · Structure no. 0008129A0000000
- Built
- 1967
- 58 years old
- Condition
- Poor
- inspected February 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 219 ft
- 3 main spans
- Daily traffic
- 1,884
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Tucannon River is a concrete continuous box beam or girders - multiple carrying US 12 over Tucannon River in Columbia County, Washington. It was built in 1967, so it is 58 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 1,884 vehicles a day, roughly 22% of them trucks, projected to reach 2,132 by 2039. The structure is 219 ft (66.8 m) long and 37 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 over Tucannon River built?
It was built in 1967, making it 58 years old in 2025.
What condition is US 12 over Tucannon 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 February 2023.
How much traffic does US 12 over Tucannon River carry?
About 1,884 vehicles per day (2023 count), of which roughly 22% are trucks.
How long is US 12 over Tucannon River?
The structure is 219 ft (66.8 m) long with a longest span of 88 ft (26.8 m) and a deck 37 ft wide.
Who owns US 12 over Tucannon River?
It is owned by the State Highway Agency.