US 12 over UPRR
FairColumbia County, Washington · 8.1 E Walla Wal CO · Structure no. 0010462A0000000
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 142 ft
- 3 main spans
- Daily traffic
- 2,442
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over UPRR is a concrete continuous slab carrying US 12 over UPRR in Columbia County, Washington. It was built in 1977, so it is 48 years old, younger than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 2,442 vehicles a day, roughly 25% of them trucks, projected to reach 3,144 by 2039. The structure is 142 ft (43.3 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 UPRR built?
It was built in 1977, making it 48 years old in 2025.
What condition is US 12 over UPRR in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.
How much traffic does US 12 over UPRR carry?
About 2,442 vehicles per day (2023 count), of which roughly 25% are trucks.
How long is US 12 over UPRR?
The structure is 142 ft (43.3 m) long with a longest span of 56 ft (17.1 m) and a deck 35 ft wide.
Who owns US 12 over UPRR?
It is owned by the State Highway Agency.