Interstate 680 over Willow Pass Road
PoorContra Costa County, California · 04-CC-680-19.04-CND · Structure no. 28 0178
- Built
- 1962
- 63 years old, rebuilt 1991
- Condition
- Poor
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 158 ft
- 3 main spans
- Daily traffic
- 130,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 680 over Willow Pass Road is a concrete continuous box beam or girders - multiple carrying Interstate 680 over Willow Pass Road in Contra Costa County, California. It was built in 1962 and reconstructed in 1991, so it is 63 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 130,000 vehicles a day, roughly 3% of them trucks, projected to reach 236,530 by 2047. The structure is 158 ft (48.3 m) long and 127 ft wide. If it were closed, the detour would be 5 mi (8 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 over Willow Pass Road built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1991.
What condition is Interstate 680 over Willow Pass 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 January 2025.
How much traffic does Interstate 680 over Willow Pass Road carry?
About 130,000 vehicles per day (2009 count), of which roughly 3% are trucks.
How long is Interstate 680 over Willow Pass Road?
The structure is 158 ft (48.3 m) long with a longest span of 85 ft (25.8 m) and a deck 127 ft wide.
Who owns Interstate 680 over Willow Pass Road?
It is owned by the State Highway Agency.