Interstate 680 SB over Koopman Road
PoorAlameda County, California · 04-ALA-680-R12.44 · Structure no. 33 0386L
- Built
- 1967
- 58 years old, rebuilt 1990
- Condition
- Poor
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 155 ft
- 3 main spans
- Daily traffic
- 59,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 680 SB over Koopman Road is a concrete continuous box beam or girders - multiple carrying Interstate 680 SB over Koopman Road in Alameda County, California. It was built in 1967 and reconstructed in 1990, so it is 58 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 59,000 vehicles a day, roughly 10% of them trucks, projected to reach 122,882 by 2044. The structure is 155 ft (47.2 m) long and 57 ft wide. If it were closed, the detour would be 23 mi (37 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Interstate 680 SB over Koopman Road built?
It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1990.
What condition is Interstate 680 SB over Koopman Road in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.
How much traffic does Interstate 680 SB over Koopman Road carry?
About 59,000 vehicles per day (2009 count), of which roughly 10% are trucks.
How long is Interstate 680 SB over Koopman Road?
The structure is 155 ft (47.2 m) long with a longest span of 66 ft (20.1 m) and a deck 57 ft wide.
Who owns Interstate 680 SB over Koopman Road?
It is owned by the State Highway Agency.