SE 180th Ave over SR 18
GoodKing County, Washington · 0.9 E JCT SR 516 · Structure no. 0013401A0000000
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 188 ft
- 2 main spans
- Daily traffic
- 9,610
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
SE 180th Ave over SR 18 is a prestressed concrete continuous stringer/multi-beam or girder carrying SE 180th Ave over SR 18 in King County, Washington. It was built in 1988, so it is 37 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 9,610 vehicles a day, roughly 2% of them trucks, projected to reach 15,852 by 2033. The structure is 188 ft (57.3 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 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 SE 180th Ave over SR 18 built?
It was built in 1988, making it 37 years old in 2025.
What condition is SE 180th Ave over SR 18 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 October 2023.
How much traffic does SE 180th Ave over SR 18 carry?
About 9,610 vehicles per day (2009 count), of which roughly 2% are trucks.
How long is SE 180th Ave over SR 18?
The structure is 188 ft (57.3 m) long with a longest span of 93 ft (28.3 m) and a deck 46 ft wide.
Who owns SE 180th Ave over SR 18?
It is owned by the State Highway Agency.