Chilpacingo Parkwy over Grayson Creek
GoodContra Costa County, California · 0.1 MI W Contra Costa Bl · Structure no. 28C0364
- Built
- 1969
- 56 years old
- Condition
- Good
- inspected February 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 95 ft
- 3 main spans
- Daily traffic
- 10,810
- 1978 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Chilpacingo Parkwy over Grayson Creek is a concrete continuous culvert carrying Chilpacingo Parkwy over Grayson Creek in Contra Costa County, California. It was built in 1969, so it is 56 years old, older 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 10,810 vehicles a day, roughly 2% of them trucks, projected to reach 27,717 by 2043. The structure is 95 ft (29 m) long and 92 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Chilpacingo Parkwy over Grayson Creek built?
It was built in 1969, making it 56 years old in 2025.
What condition is Chilpacingo Parkwy over Grayson 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 February 2025.
How much traffic does Chilpacingo Parkwy over Grayson Creek carry?
About 10,810 vehicles per day (1978 count), of which roughly 2% are trucks.
How long is Chilpacingo Parkwy over Grayson Creek?
The structure is 95 ft (29 m) long with a longest span of 31 ft (9.4 m) and a deck 92 ft wide.
Who owns Chilpacingo Parkwy over Grayson Creek?
It is owned by the City or Municipal Highway Agency.