Third ST over China Basin
GoodSan Francisco County, California · S of Berry ST · Structure no. 34C0025
- Built
- 1932
- 93 years old, rebuilt 1998
- Condition
- Good
- inspected December 2024
- Type
- Movable - Bascule
- Steel
- Length
- 295 ft
- 1 main span
- Daily traffic
- 25,000
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Third ST over China Basin is a steel movable - bascule carrying Third ST over China Basin in San Francisco County, California. It was built in 1932 and reconstructed in 1998, 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 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 25,000 vehicles a day, roughly 30% of them trucks, projected to reach 36,914 by 2042. The structure is 295 ft (89.9 m) long and 72 ft wide. 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 |
|---|---|---|
| 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 Third ST over China Basin built?
It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1998.
What condition is Third ST over China Basin 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 2024.
How much traffic does Third ST over China Basin carry?
About 25,000 vehicles per day (2015 count), of which roughly 30% are trucks.
How long is Third ST over China Basin?
The structure is 295 ft (89.9 m) long with a longest span of 142 ft (43.4 m) and a deck 72 ft wide.
Who owns Third ST over China Basin?
It is owned by the County Highway Agency.