I-405 NB Hov over I-90 Factoria
FairKing County, Washington · 5.7 N JCT SR 900 · Structure no. 0008190G0000000
- Built
- 1969
- 56 years old, rebuilt 1995
- Condition
- Fair
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 526 ft
- 6 main spans
- Daily traffic
- 10,114
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-405 NB Hov over I-90 Factoria is a concrete continuous box beam or girders - multiple carrying I-405 NB Hov over I-90 Factoria in King County, Washington. It was built in 1969 and reconstructed in 1995, so it is 56 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 10,114 vehicles a day, roughly 6% of them trucks, projected to reach 15,314 by 2039. The structure is 526 ft (160.3 m) long and 41 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-405 NB Hov over I-90 Factoria built?
It was built in 1969, making it 56 years old in 2025. It was reconstructed in 1995.
What condition is I-405 NB Hov over I-90 Factoria 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 August 2024.
How much traffic does I-405 NB Hov over I-90 Factoria carry?
About 10,114 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is I-405 NB Hov over I-90 Factoria?
The structure is 526 ft (160.3 m) long with a longest span of 116 ft (35.4 m) and a deck 41 ft wide.
Who owns I-405 NB Hov over I-90 Factoria?
It is owned by the State Highway Agency.