Richmond Parkway over Parkway Wetlands
GoodContra Costa County, California · 3.6 MI SW of I-80 · Structure no. 28C0475
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected December 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 25 ft
- 3 main spans
- Daily traffic
- 27,000
- 2012 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Richmond Parkway over Parkway Wetlands is a concrete continuous culvert carrying Richmond Parkway over Parkway Wetlands in Contra Costa County, California. It was built in 1995, so it is 30 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 27,000 vehicles a day, roughly 5% of them trucks, projected to reach 29,629 by 2046. The structure is 25 ft (7.5 m) long and 123 ft wide. If it were closed, the detour would be 5 mi (8 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Richmond Parkway over Parkway Wetlands built?
It was built in 1995, making it 30 years old in 2025.
What condition is Richmond Parkway over Parkway Wetlands 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 December 2024.
How much traffic does Richmond Parkway over Parkway Wetlands carry?
About 27,000 vehicles per day (2012 count), of which roughly 5% are trucks.
How long is Richmond Parkway over Parkway Wetlands?
The structure is 25 ft (7.5 m) long with a longest span of 8 ft (2.5 m) and a deck 123 ft wide.
Who owns Richmond Parkway over Parkway Wetlands?
It is owned by the City or Municipal Highway Agency.