Interstate 680 over South King Road
FairSanta Clara County, California · 04-SCL-680-M0.38-SJS · Structure no. 37 0286
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected July 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 147 ft
- 1 main span
- Daily traffic
- 160,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 680 over South King Road is a prestressed concrete box beam or girders - multiple carrying Interstate 680 over South King Road in Santa Clara County, California. It was built in 1974, so it is 51 years old, younger than the California average of 54.8 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 160,000 vehicles a day, roughly 2% of them trucks, projected to reach 365,979 by 2045. The structure is 147 ft (44.8 m) long and 247 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 680 over South King Road built?
It was built in 1974, making it 51 years old in 2025.
What condition is Interstate 680 over South King Road 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 July 2023.
How much traffic does Interstate 680 over South King Road carry?
About 160,000 vehicles per day (2009 count), of which roughly 2% are trucks.
How long is Interstate 680 over South King Road?
The structure is 147 ft (44.8 m) long with a longest span of 141 ft (43 m) and a deck 247 ft wide.
Who owns Interstate 680 over South King Road?
It is owned by the State Highway Agency.