Lake Washington Bv over I-405
FairKing County, Washington · 3.8 N JCT SR 900 · Structure no. 0007623B0000000
- Built
- 1965
- 60 years old, rebuilt 1981
- Condition
- Fair
- inspected April 2024
- Type
- Slab
- Concrete Continuous
- Length
- 106 ft
- 2 main spans
- Daily traffic
- 3,937
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
Lake Washington Bv over I-405 is a concrete continuous slab carrying Lake Washington Bv over I-405 in King County, Washington. It was built in 1965 and reconstructed in 1981, so it is 60 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 5 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 3,937 vehicles a day, roughly 8% of them trucks. The structure is 106 ft (32.3 m) long and 41 ft wide.
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Lake Washington Bv over I-405 built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1981.
What condition is Lake Washington Bv over I-405 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 April 2024.
How much traffic does Lake Washington Bv over I-405 carry?
About 3,937 vehicles per day (2012 count), of which roughly 8% are trucks.
How long is Lake Washington Bv over I-405?
The structure is 106 ft (32.3 m) long with a longest span of 52 ft (15.8 m) and a deck 41 ft wide.
Who owns Lake Washington Bv over I-405?
It is owned by the State Highway Agency.