WB Route 4 over Private Access Road
GoodContra Costa County, California · 04-CC-004-R3.87L-MTZ · Structure no. 28 0361L
- Built
- 2002
- 23 years old
- Condition
- Good
- inspected May 2024
- Type
- Arch - Deck
- Steel
- Length
- 22 ft
- 1 main span
- Daily traffic
- 10,200
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
WB Route 4 over Private Access Road is a steel arch - deck carrying WB Route 4 over Private Access Road in Contra Costa County, California. It was built in 2002, so it is 23 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 10,200 vehicles a day, roughly 6% of them trucks, projected to reach 12,319 by 2042. The structure is 22 ft (6.7 m) long and 57 ft wide. If it were closed, the detour would be 9.9 mi (16 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 |
|---|---|---|
| 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 WB Route 4 over Private Access Road built?
It was built in 2002, making it 23 years old in 2025.
What condition is WB Route 4 over Private Access Road 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 2024.
How much traffic does WB Route 4 over Private Access Road carry?
About 10,200 vehicles per day (2018 count), of which roughly 6% are trucks.
How long is WB Route 4 over Private Access Road?
The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 57 ft wide.
Who owns WB Route 4 over Private Access Road?
It is owned by the State Highway Agency.