State Route 4 EB over Contra Loma Blvd
GoodContra Costa County, California · 04-CC-004-26.93-ANT · Structure no. 28 0399R
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected June 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 162 ft
- 2 main spans
- Daily traffic
- 57,000
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 4 EB over Contra Loma Blvd is a prestressed concrete slab carrying State Route 4 EB over Contra Loma Blvd in Contra Costa County, California. It was built in 2015, so it is 10 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 57,000 vehicles a day, roughly 8% of them trucks, projected to reach 77,584 by 2045. The structure is 162 ft (49.4 m) long and 71 ft wide. If it were closed, the detour would be 2.5 mi (4 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 EB over Contra Loma Blvd built?
It was built in 2015, making it 10 years old in 2025.
What condition is State Route 4 EB over Contra Loma Blvd 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 EB over Contra Loma Blvd carry?
About 57,000 vehicles per day (2017 count), of which roughly 8% are trucks.
How long is State Route 4 EB over Contra Loma Blvd?
The structure is 162 ft (49.4 m) long with a longest span of 79 ft (24 m) and a deck 71 ft wide.
Who owns State Route 4 EB over Contra Loma Blvd?
It is owned by the State Highway Agency.