SR 599 over 133rd ST
GoodKing County, Washington · 0.3 N JCT I-5 · Structure no. 0007956C0000000
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected May 2022
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 141 ft
- 3 main spans
- Daily traffic
- 22,284
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 599 over 133rd ST is a prestressed concrete stringer/multi-beam or girder carrying SR 599 over 133rd ST in King County, Washington. It was built in 1966, so it is 59 years old, older 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 22,284 vehicles a day, roughly 10% of them trucks, projected to reach 35,192 by 2039. The structure is 141 ft (43 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 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 SR 599 over 133rd ST built?
It was built in 1966, making it 59 years old in 2025.
What condition is SR 599 over 133rd 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 2022.
How much traffic does SR 599 over 133rd ST carry?
About 22,284 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is SR 599 over 133rd ST?
The structure is 141 ft (43 m) long with a longest span of 62 ft (18.9 m) and a deck 52 ft wide.
Who owns SR 599 over 133rd ST?
It is owned by the State Highway Agency.