SR 510 over Np RY
GoodThurston County, Washington · 3.9 E JCT I-5 · Structure no. 0008628A0000000
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected September 2021
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 191 ft
- 3 main spans
- Daily traffic
- 13,225
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 510 over Np RY is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 510 over Np RY in Thurston County, Washington. It was built in 1970, so it is 55 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 13,225 vehicles a day, roughly 4% of them trucks, projected to reach 19,429 by 2039. The structure is 191 ft (58.2 m) long and 36 ft wide. If it were closed, the detour would be 8.1 mi (13 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 SR 510 over Np RY built?
It was built in 1970, making it 55 years old in 2025.
What condition is SR 510 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 2021.
How much traffic does SR 510 over Np RY carry?
About 13,225 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is SR 510 over Np RY?
The structure is 191 ft (58.2 m) long with a longest span of 72 ft (21.9 m) and a deck 36 ft wide.
Who owns SR 510 over Np RY?
It is owned by the State Highway Agency.