Terminal Drive NB over S 170th ST
GoodKing County, Washington · 1 MI S of SR 518 · Structure no. 088541000000000
- Built
- 2010
- 15 years old
- Condition
- Good
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 406 ft
- 2 main spans
- Daily traffic
- 35,000
- 2016 count
- Owner
- Local
- Other Local Agency
About this bridge
Terminal Drive NB over S 170th ST is a concrete continuous box beam or girders - multiple carrying Terminal Drive NB over S 170th ST in King County, Washington. It was built in 2010, so it is 15 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 35,000 vehicles a day, roughly 2% of them trucks, projected to reach 25,000 by 2036. The structure is 406 ft (123.7 m) long and 75 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 Terminal Drive NB over S 170th ST built?
It was built in 2010, making it 15 years old in 2025.
What condition is Terminal Drive NB over S 170th ST 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 May 2023.
How much traffic does Terminal Drive NB over S 170th ST carry?
About 35,000 vehicles per day (2016 count), of which roughly 2% are trucks.
How long is Terminal Drive NB over S 170th ST?
The structure is 406 ft (123.7 m) long with a longest span of 200 ft (61 m) and a deck 75 ft wide.
Who owns Terminal Drive NB over S 170th ST?
It is owned by the Other Local Agency.