SW Spokane ST over Duwamish River E Waterwy
FairKing County, Washington · 800 SW Spokane ST · Structure no. 085298000000000
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 485 ft
- 6 main spans
- Daily traffic
- 8,800
- 2018 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
SW Spokane ST over Duwamish River E Waterwy is a prestressed concrete stringer/multi-beam or girder carrying SW Spokane ST over Duwamish River E Waterwy in King County, Washington. It was built in 1976, so it is 49 years old, younger than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 8,800 vehicles a day, roughly 35% of them trucks, projected to reach 13,000 by 2040. The structure is 485 ft (147.8 m) long and 71 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SW Spokane ST over Duwamish River E Waterwy built?
It was built in 1976, making it 49 years old in 2025.
What condition is SW Spokane ST over Duwamish River E Waterwy in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.
How much traffic does SW Spokane ST over Duwamish River E Waterwy carry?
About 8,800 vehicles per day (2018 count), of which roughly 35% are trucks.
How long is SW Spokane ST over Duwamish River E Waterwy?
The structure is 485 ft (147.8 m) long with a longest span of 88 ft (26.8 m) and a deck 71 ft wide.
Who owns SW Spokane ST over Duwamish River E Waterwy?
It is owned by the City or Municipal Highway Agency.