Red Willow RD over West Branch Alamo Creek
FairContra Costa County, California · 0.1 MI SE Dougherty RD · Structure no. 28C0452
- Built
- 1990
- 35 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 120 ft
- 3 main spans
- Daily traffic
- 400
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Red Willow RD over West Branch Alamo Creek is a wood or timber stringer/multi-beam or girder carrying Red Willow RD over West Branch Alamo Creek in Contra Costa County, California. It was built in 1990, so it is 35 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 400 vehicles a day, roughly 1% of them trucks, projected to reach 1,200 by 2045. The structure is 120 ft (36.6 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Red Willow RD over West Branch Alamo Creek built?
It was built in 1990, making it 35 years old in 2025.
What condition is Red Willow RD over West Branch Alamo Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.
How much traffic does Red Willow RD over West Branch Alamo Creek carry?
About 400 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Red Willow RD over West Branch Alamo Creek?
The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.
Who owns Red Willow RD over West Branch Alamo Creek?
It is owned by the City or Municipal Highway Agency.