Whitman RD over Sdm Channel
GoodContra Costa County, California · 0.3 MI NE Oak Grove RD · Structure no. 28C0224
- Built
- 1965
- 60 years old
- Condition
- Good
- inspected November 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 45 ft
- 3 main spans
- Daily traffic
- 1,500
- 1981 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Whitman RD over Sdm Channel is a concrete continuous culvert carrying Whitman RD over Sdm Channel in Contra Costa County, California. It was built in 1965, so it is 60 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 1,500 vehicles a day, roughly 3% of them trucks, projected to reach 2,137 by 2041. The structure is 45 ft (13.8 m) long. If it were closed, the detour would be 1.2 mi (2 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 | 9 Excellent | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Whitman RD over Sdm Channel built?
It was built in 1965, making it 60 years old in 2025.
What condition is Whitman RD over Sdm Channel 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 November 2023.
How much traffic does Whitman RD over Sdm Channel carry?
About 1,500 vehicles per day (1981 count), of which roughly 3% are trucks.
How long is Whitman RD over Sdm Channel?
The structure is 45 ft (13.8 m) long with a longest span of 14 ft (4.3 m).
Who owns Whitman RD over Sdm Channel?
It is owned by the City or Municipal Highway Agency.