Interstate 80 over Willow Avenue
PoorContra Costa County, California · 04-CC-080-10.69-HER · Structure no. 28 0151
- Built
- 1958
- 67 years old, rebuilt 2008
- Condition
- Poor
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 165 ft
- 3 main spans
- Daily traffic
- 115,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 80 over Willow Avenue is a steel stringer/multi-beam or girder carrying Interstate 80 over Willow Avenue in Contra Costa County, California. It was built in 1958 and reconstructed in 2008, so it is 67 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 115,000 vehicles a day, roughly 7% of them trucks, projected to reach 186,440 by 2045. The structure is 165 ft (50.2 m) long and 118 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 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 80 over Willow Avenue built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2008.
What condition is Interstate 80 over Willow Avenue 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 July 2023.
How much traffic does Interstate 80 over Willow Avenue carry?
About 115,000 vehicles per day (2019 count), of which roughly 7% are trucks.
How long is Interstate 80 over Willow Avenue?
The structure is 165 ft (50.2 m) long with a longest span of 67 ft (20.4 m) and a deck 118 ft wide.
Who owns Interstate 80 over Willow Avenue?
It is owned by the State Highway Agency.