Calaveras RD over San Antonio Creek
FairAlameda County, California · 0.9 MI Se/O I-680 · Structure no. 33C0126
- Built
- 1932
- 93 years old
- Condition
- Fair
- inspected November 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 123 ft
- 3 main spans
- Daily traffic
- 1,920
- 2014 count
- Owner
- County
- County Highway Agency
About this bridge
Calaveras RD over San Antonio Creek is a concrete continuous tee beam carrying Calaveras RD over San Antonio Creek in Alameda County, California. It was built in 1932, so it is 93 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 5 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 1,920 vehicles a day, roughly 5% of them trucks, projected to reach 817 by 2041. The structure is 123 ft (37.5 m) long and 29 ft wide. If it were closed, the detour would be 24.9 mi (40 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Calaveras RD over San Antonio Creek built?
It was built in 1932, making it 93 years old in 2025.
What condition is Calaveras RD over San Antonio Creek 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 November 2023.
How much traffic does Calaveras RD over San Antonio Creek carry?
About 1,920 vehicles per day (2014 count), of which roughly 5% are trucks.
How long is Calaveras RD over San Antonio Creek?
The structure is 123 ft (37.5 m) long with a longest span of 47 ft (14.3 m) and a deck 29 ft wide.
Who owns Calaveras RD over San Antonio Creek?
It is owned by the County Highway Agency.