SR 509 N-N Ramp over Terrain
GoodPierce County, Washington · JCT I-705 · Structure no. 0014747B0000000
- Built
- 1996
- 29 years old
- Condition
- Good
- inspected November 2021
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 199 ft
- 2 main spans
- Daily traffic
- 6,673
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
SR 509 N-N Ramp over Terrain is a prestressed concrete continuous box beam or girders - multiple carrying SR 509 N-N Ramp over Terrain in Pierce County, Washington. It was built in 1996, so it is 29 years old, younger 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 6,673 vehicles a day, roughly 3% of them trucks, projected to reach 11,478 by 2036. The structure is 199 ft (60.7 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 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 509 N-N Ramp over Terrain built?
It was built in 1996, making it 29 years old in 2025.
What condition is SR 509 N-N Ramp over Terrain 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 November 2021.
How much traffic does SR 509 N-N Ramp over Terrain carry?
About 6,673 vehicles per day (2012 count), of which roughly 3% are trucks.
How long is SR 509 N-N Ramp over Terrain?
The structure is 199 ft (60.7 m) long with a longest span of 99 ft (30.2 m) and a deck 39 ft wide.
Who owns SR 509 N-N Ramp over Terrain?
It is owned by the State Highway Agency.