G Street over State Route 4
GoodContra Costa County, California · 04-CC-004-27.29-ANT · Structure no. 28 0400
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 267 ft
- 2 main spans
- Daily traffic
- 30,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
G Street over State Route 4 is a prestressed concrete continuous box beam or girders - multiple carrying G Street over State Route 4 in Contra Costa County, California. It was built in 2014, so it is 11 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 30,000 vehicles a day, roughly 3% of them trucks, projected to reach 40,807 by 2045. The structure is 267 ft (81.4 m) long and 68 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 G Street over State Route 4 built?
It was built in 2014, making it 11 years old in 2025.
What condition is G Street over State Route 4 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 G Street over State Route 4 carry?
About 30,000 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is G Street over State Route 4?
The structure is 267 ft (81.4 m) long with a longest span of 144 ft (44 m) and a deck 68 ft wide.
Who owns G Street over State Route 4?
It is owned by the State Highway Agency.