Harriet DR over Grayson Creek
GoodContra Costa County, California · At Ruth DR · Structure no. 28C0412
- Built
- 1957
- 68 years old
- Condition
- Good
- inspected February 2025
- Type
- Slab
- Concrete
- Length
- 39 ft
- 1 main span
- Daily traffic
- 800
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Harriet DR over Grayson Creek is a concrete slab carrying Harriet DR over Grayson Creek in Contra Costa County, California. It was built in 1957, so it is 68 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 800 vehicles a day, roughly 1% of them trucks, projected to reach 1,703 by 2047. The structure is 39 ft (11.9 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Harriet DR over Grayson Creek built?
It was built in 1957, making it 68 years old in 2025.
What condition is Harriet DR 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 Harriet DR over Grayson Creek carry?
About 800 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Harriet DR over Grayson Creek?
The structure is 39 ft (11.9 m) long with a longest span of 39 ft (11.9 m) and a deck 44 ft wide.
Who owns Harriet DR over Grayson Creek?
It is owned by the City or Municipal Highway Agency.