Dougherty Road over West Branch Alamo Creek
GoodContra Costa County, California · 0.2 MI S. of Bollinger Cy · Structure no. 28C0254
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 310 ft
- 2 main spans
- Daily traffic
- 2,760
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Dougherty Road over West Branch Alamo Creek is a prestressed concrete continuous box beam or girders - multiple carrying Dougherty Road over West Branch Alamo Creek 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 2,760 vehicles a day, roughly 2% of them trucks, projected to reach 5,978 by 2045. The structure is 310 ft (94.5 m) long and 123 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. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Dougherty Road over West Branch Alamo Creek built?
It was built in 2015, making it 10 years old in 2025.
What condition is Dougherty Road over West Branch Alamo Creek 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 March 2024.
How much traffic does Dougherty Road over West Branch Alamo Creek carry?
About 2,760 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Dougherty Road over West Branch Alamo Creek?
The structure is 310 ft (94.5 m) long with a longest span of 160 ft (48.8 m) and a deck 123 ft wide.
Who owns Dougherty Road over West Branch Alamo Creek?
It is owned by the City or Municipal Highway Agency.