Alemany Blvd SB over Route I 280
GoodSan Francisco County, California · 04-SF-280-R3.28-SF · Structure no. 34 0074
- Built
- 1963
- 62 years old
- Condition
- Good
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 273 ft
- 2 main spans
- Daily traffic
- 16,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Alemany Blvd SB over Route I 280 is a concrete continuous box beam or girders - multiple carrying Alemany Blvd SB over Route I 280 in San Francisco County, California. It was built in 1963, so it is 62 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 16,000 vehicles a day, roughly 1% of them trucks, projected to reach 21,305 by 2044. The structure is 273 ft (83.2 m) long and 44 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 Alemany Blvd SB over Route I 280 built?
It was built in 1963, making it 62 years old in 2025.
What condition is Alemany Blvd SB over Route I 280 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 April 2024.
How much traffic does Alemany Blvd SB over Route I 280 carry?
About 16,000 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is Alemany Blvd SB over Route I 280?
The structure is 273 ft (83.2 m) long with a longest span of 145 ft (44.2 m) and a deck 44 ft wide.
Who owns Alemany Blvd SB over Route I 280?
It is owned by the State Highway Agency.