Whitman ST over Harder Road
FairAlameda County, California · Harder RD · Structure no. 33C0219
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 177 ft
- 4 main spans
- Daily traffic
- 8,226
- 2010 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Whitman ST over Harder Road is a concrete continuous box beam or girders - multiple carrying Whitman ST over Harder Road in Alameda County, California. It was built in 1970, so it is 55 years old, older 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 8,226 vehicles a day, roughly 2% of them trucks, projected to reach 19,623 by 2046. The structure is 177 ft (53.9 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Whitman ST over Harder Road built?
It was built in 1970, making it 55 years old in 2025.
What condition is Whitman ST over Harder Road 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 October 2024.
How much traffic does Whitman ST over Harder Road carry?
About 8,226 vehicles per day (2010 count), of which roughly 2% are trucks.
How long is Whitman ST over Harder Road?
The structure is 177 ft (53.9 m) long with a longest span of 55 ft (16.8 m) and a deck 58 ft wide.
Who owns Whitman ST over Harder Road?
It is owned by the City or Municipal Highway Agency.