State Route 4 over Interstate Route 680
FairContra Costa County, California · 04-CC-004-12.64 · Structure no. 28 0179
- Built
- 1962
- 63 years old, rebuilt 2021
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 241 ft
- 4 main spans
- Daily traffic
- 82,600
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 4 over Interstate Route 680 is a concrete continuous box beam or girders - multiple carrying State Route 4 over Interstate Route 680 in Contra Costa County, California. It was built in 1962 and reconstructed in 2021, 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 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 82,600 vehicles a day, roughly 7% of them trucks, projected to reach 107,400 by 2042. The structure is 241 ft (73.5 m) long and 142 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 State Route 4 over Interstate Route 680 built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2021.
What condition is State Route 4 over Interstate Route 680 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 June 2024.
How much traffic does State Route 4 over Interstate Route 680 carry?
About 82,600 vehicles per day (2019 count), of which roughly 7% are trucks.
How long is State Route 4 over Interstate Route 680?
The structure is 241 ft (73.5 m) long with a longest span of 72 ft (22 m) and a deck 142 ft wide.
Who owns State Route 4 over Interstate Route 680?
It is owned by the State Highway Agency.