23rd Street over Caltrain
GoodSan Francisco County, California · Jeo Pennsylvania Ave · Structure no. 34C0091
- Built
- 1930
- 95 years old, rebuilt 2016
- Condition
- Good
- inspected December 2022
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 104 ft
- 2 main spans
- Daily traffic
- 8,000
- 2013 count
- Owner
- Local
- Other Local Agency
About this bridge
23rd Street over Caltrain is a prestressed concrete continuous box beam or girders - multiple carrying 23rd Street over Caltrain in San Francisco County, California. It was built in 1930 and reconstructed in 2016, so it is 95 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 8,000 vehicles a day, roughly 5% of them trucks, projected to reach 10,202 by 2040. The structure is 104 ft (31.7 m) long and 66 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 23rd Street over Caltrain built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2016.
What condition is 23rd Street over Caltrain 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 December 2022.
How much traffic does 23rd Street over Caltrain carry?
About 8,000 vehicles per day (2013 count), of which roughly 5% are trucks.
How long is 23rd Street over Caltrain?
The structure is 104 ft (31.7 m) long with a longest span of 58 ft (17.6 m) and a deck 66 ft wide.
Who owns 23rd Street over Caltrain?
It is owned by the Other Local Agency.