SR 900 over I-5
FairKing County, Washington · JCT I-5 · Structure no. 0007618H0000000
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 450 ft
- 4 main spans
- Daily traffic
- 16,633
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 900 over I-5 is a concrete continuous box beam or girders - multiple carrying SR 900 over I-5 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 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 16,633 vehicles a day, roughly 4% of them trucks, projected to reach 23,324 by 2039. The structure is 450 ft (137.2 m) long and 34 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 900 over I-5 built?
It was built in 1966, making it 59 years old in 2025.
What condition is SR 900 over I-5 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 June 2024.
How much traffic does SR 900 over I-5 carry?
About 16,633 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is SR 900 over I-5?
The structure is 450 ft (137.2 m) long with a longest span of 150 ft (45.7 m) and a deck 34 ft wide.
Who owns SR 900 over I-5?
It is owned by the State Highway Agency.