US 12 over Silver Creek
FairLewis County, Washington · 1.7 E JCT SR 131 · Structure no. 0005378A0000000
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected February 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 170 ft
- 3 main spans
- Daily traffic
- 4,109
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Silver Creek is a concrete continuous tee beam carrying US 12 over Silver Creek in Lewis County, Washington. It was built in 1957, so it is 68 years old, older 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 4,109 vehicles a day, roughly 22% of them trucks, projected to reach 5,333 by 2039. The structure is 170 ft (51.8 m) long and 38 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 over Silver Creek built?
It was built in 1957, making it 68 years old in 2025.
What condition is US 12 over Silver Creek 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 February 2023.
How much traffic does US 12 over Silver Creek carry?
About 4,109 vehicles per day (2023 count), of which roughly 22% are trucks.
How long is US 12 over Silver Creek?
The structure is 170 ft (51.8 m) long with a longest span of 70 ft (21.3 m) and a deck 38 ft wide.
Who owns US 12 over Silver Creek?
It is owned by the State Highway Agency.