US 12 over Lacamas Creek
GoodLewis County, Washington · 6.7 E JCT I-5 · Structure no. 0000446A0000000
- Built
- 1921
- 104 years old, rebuilt 2000
- Condition
- Good
- inspected September 2024
- Type
- Slab
- Concrete Continuous
- Length
- 27 ft
- 2 main spans
- Daily traffic
- 10,107
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Lacamas Creek is a concrete continuous slab carrying US 12 over Lacamas Creek in Lewis County, Washington. It was built in 1921 and reconstructed in 2000, so it is 104 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 10,107 vehicles a day, roughly 16% of them trucks, projected to reach 11,340 by 2039. The structure is 27 ft (8.2 m) long and 54 ft wide. If it were closed, the detour would be 8.7 mi (14 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 Lacamas Creek built?
It was built in 1921, making it 104 years old in 2025. It was reconstructed in 2000.
What condition is US 12 over Lacamas Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.
How much traffic does US 12 over Lacamas Creek carry?
About 10,107 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is US 12 over Lacamas Creek?
The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 54 ft wide.
Who owns US 12 over Lacamas Creek?
It is owned by the State Highway Agency.