US 12 over WB Off Ramp
PoorWalla Walla County, Washington · 5.6 E JCT SR 125 Spur · Structure no. 0008855D0000000
- Built
- 1971
- 54 years old
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 474 ft
- 4 main spans
- Daily traffic
- 4,350
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over WB Off Ramp is a steel continuous stringer/multi-beam or girder carrying US 12 over WB Off Ramp in Walla Walla County, Washington. It was built in 1971, so it is 54 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 3 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 4,350 vehicles a day, roughly 13% of them trucks, projected to reach 5,167 by 2039. The structure is 474 ft (144.5 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 over WB Off Ramp built?
It was built in 1971, making it 54 years old in 2025.
What condition is US 12 over WB Off Ramp 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 US 12 over WB Off Ramp carry?
About 4,350 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is US 12 over WB Off Ramp?
The structure is 474 ft (144.5 m) long with a longest span of 140 ft (42.7 m) and a deck 46 ft wide.
Who owns US 12 over WB Off Ramp?
It is owned by the State Highway Agency.