SW Spokane ST over E Marginal Way S
FairKing County, Washington · 1200 SW Spokane ST · Structure no. 085306000000000
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 986 ft
- 18 main spans
- Daily traffic
- 10,000
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
SW Spokane ST over E Marginal Way S is a prestressed concrete continuous stringer/multi-beam or girder carrying SW Spokane ST over E Marginal Way S in King County, Washington. It was built in 1983, so it is 42 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 5 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 10,000 vehicles a day, roughly 20% of them trucks, projected to reach 60,000 by 2041. The structure is 986 ft (300.5 m) long and 54 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 E Marginal Way S built?
It was built in 1983, making it 42 years old in 2025.
What condition is SW Spokane ST over E Marginal Way S 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 September 2024.
How much traffic does SW Spokane ST over E Marginal Way S carry?
About 10,000 vehicles per day (2020 count), of which roughly 20% are trucks.
How long is SW Spokane ST over E Marginal Way S?
The structure is 986 ft (300.5 m) long with a longest span of 155 ft (47.2 m) and a deck 54 ft wide.
Who owns SW Spokane ST over E Marginal Way S?
It is owned by the City or Municipal Highway Agency.