State Route 4 WB over A Street
GoodContra Costa County, California · 04-CC-004-R27.78-ANT · Structure no. 28 0401L
- Built
- 2016
- 9 years old
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 202 ft
- 2 main spans
- Daily traffic
- 50,500
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 4 WB over A Street is a prestressed concrete continuous box beam or girders - multiple carrying State Route 4 WB over A Street in Contra Costa County, California. It was built in 2016, so it is 9 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 50,500 vehicles a day, roughly 8% of them trucks, projected to reach 71,412 by 2045. The structure is 202 ft (61.6 m) long and 71 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 WB over A Street built?
It was built in 2016, making it 9 years old in 2025.
What condition is State Route 4 WB over A Street in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.
How much traffic does State Route 4 WB over A Street carry?
About 50,500 vehicles per day (2017 count), of which roughly 8% are trucks.
How long is State Route 4 WB over A Street?
The structure is 202 ft (61.6 m) long with a longest span of 99 ft (30.1 m) and a deck 71 ft wide.
Who owns State Route 4 WB over A Street?
It is owned by the State Highway Agency.