Railroad Avenue over State Route 4
GoodContra Costa County, California · 04-CC-004-23.04-PIT · Structure no. 28 0386
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 282 ft
- 2 main spans
- Daily traffic
- 28,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Railroad Avenue over State Route 4 is a prestressed concrete continuous box beam or girders - multiple carrying Railroad Avenue over State Route 4 in Contra Costa County, California. It was built in 2004, so it is 21 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 28,000 vehicles a day, roughly 8% of them trucks, projected to reach 39,516 by 2043. The structure is 282 ft (86 m) long and 119 ft wide. If it were closed, the detour would be 0.6 mi (1 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 Railroad Avenue over State Route 4 built?
It was built in 2004, making it 21 years old in 2025.
What condition is Railroad Avenue 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 May 2023.
How much traffic does Railroad Avenue over State Route 4 carry?
About 28,000 vehicles per day (2019 count), of which roughly 8% are trucks.
How long is Railroad Avenue over State Route 4?
The structure is 282 ft (86 m) long with a longest span of 141 ft (43 m) and a deck 119 ft wide.
Who owns Railroad Avenue over State Route 4?
It is owned by the State Highway Agency.