SR 520 over NE 24th ST
GoodKing County, Washington · 1.9 E JCT I-405 · Structure no. 0009259C0000000
- Built
- 1972
- 53 years old, rebuilt 1998
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 329 ft
- 3 main spans
- Daily traffic
- 45,466
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 520 over NE 24th ST is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 520 over NE 24th ST in King County, Washington. It was built in 1972 and reconstructed in 1998, so it is 53 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 45,466 vehicles a day, roughly 3% of them trucks, projected to reach 74,202 by 2039. The structure is 329 ft (100.3 m) long and 85 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 520 over NE 24th ST built?
It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1998.
What condition is SR 520 over NE 24th 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 June 2023.
How much traffic does SR 520 over NE 24th ST carry?
About 45,466 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is SR 520 over NE 24th ST?
The structure is 329 ft (100.3 m) long with a longest span of 109 ft (33.2 m) and a deck 85 ft wide.
Who owns SR 520 over NE 24th ST?
It is owned by the State Highway Agency.