S-W Ramp over W Valley HWY S Mill CR
FairKing County, Washington · 2.8 N Pierce CO · Structure no. 0009236E0000000
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 314 ft
- 4 main spans
- Daily traffic
- 19,506
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-W Ramp over W Valley HWY S Mill CR is a prestressed concrete continuous stringer/multi-beam or girder carrying S-W Ramp over W Valley HWY S Mill CR in King County, Washington. It was built in 1973, so it is 52 years old, older 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 19,506 vehicles a day, roughly 12% of them trucks, projected to reach 26,480 by 2039. The structure is 314 ft (95.7 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| 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 S-W Ramp over W Valley HWY S Mill CR built?
It was built in 1973, making it 52 years old in 2025.
What condition is S-W Ramp over W Valley HWY S Mill CR 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 2023.
How much traffic does S-W Ramp over W Valley HWY S Mill CR carry?
About 19,506 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is S-W Ramp over W Valley HWY S Mill CR?
The structure is 314 ft (95.7 m) long with a longest span of 87 ft (26.5 m) and a deck 30 ft wide.
Who owns S-W Ramp over W Valley HWY S Mill CR?
It is owned by the State Highway Agency.