I-5 Nbcd over Dearborn ST
FairKing County, Washington · 0.1 N JCT I-90 · Structure no. 0007565I0000000
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 216 ft
- 3 main spans
- Daily traffic
- 20,967
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 Nbcd over Dearborn ST is a concrete continuous box beam or girders - multiple carrying I-5 Nbcd over Dearborn ST in King County, Washington. It was built in 1965, 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 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 20,967 vehicles a day, roughly 5% of them trucks, projected to reach 35,057 by 2036. The structure is 216 ft (65.8 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-5 Nbcd over Dearborn ST built?
It was built in 1965, making it 60 years old in 2025.
What condition is I-5 Nbcd over Dearborn ST 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 October 2024.
How much traffic does I-5 Nbcd over Dearborn ST carry?
About 20,967 vehicles per day (2012 count), of which roughly 5% are trucks.
How long is I-5 Nbcd over Dearborn ST?
The structure is 216 ft (65.8 m) long with a longest span of 96 ft (29.3 m) and a deck 41 ft wide.
Who owns I-5 Nbcd over Dearborn ST?
It is owned by the State Highway Agency.