I-5 Sbcd over Terrain
FairKing County, Washington · JCT I-90 · Structure no. 0007686D0000000
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected October 2024
- Type
- Slab
- Concrete Continuous
- Length
- 729 ft
- 17 main spans
- Daily traffic
- 24,462
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 Sbcd over Terrain is a concrete continuous slab carrying I-5 Sbcd over Terrain in King County, Washington. It was built in 1967, so it is 58 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 24,462 vehicles a day, roughly 10% of them trucks, projected to reach 40,900 by 2036. The structure is 729 ft (222.2 m) long and 52 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-5 Sbcd over Terrain built?
It was built in 1967, making it 58 years old in 2025.
What condition is I-5 Sbcd over Terrain 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 Sbcd over Terrain carry?
About 24,462 vehicles per day (2012 count), of which roughly 10% are trucks.
How long is I-5 Sbcd over Terrain?
The structure is 729 ft (222.2 m) long with a longest span of 45 ft (13.7 m) and a deck 52 ft wide.
Who owns I-5 Sbcd over Terrain?
It is owned by the State Highway Agency.