US 12 over Np RY
GoodThurston County, Washington · 6.1 E Grays Hbr CO · Structure no. 0007406A0000000
- Built
- 1964
- 61 years old
- Condition
- Good
- inspected September 2023
- Type
- Slab
- Concrete Continuous
- Length
- 261 ft
- 5 main spans
- Daily traffic
- 13,337
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Np RY is a concrete continuous slab carrying US 12 over Np RY in Thurston County, Washington. It was built in 1964, so it is 61 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 13,337 vehicles a day, roughly 9% of them trucks, projected to reach 19,933 by 2039. The structure is 261 ft (79.6 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 over Np RY built?
It was built in 1964, making it 61 years old in 2025.
What condition is US 12 over Np RY 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 2023.
How much traffic does US 12 over Np RY carry?
About 13,337 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is US 12 over Np RY?
The structure is 261 ft (79.6 m) long with a longest span of 66 ft (20.1 m) and a deck 32 ft wide.
Who owns US 12 over Np RY?
It is owned by the State Highway Agency.