Interstate 580 over Webster Street
GoodAlameda County, California · 04-ALA-580-44.81-OAK · Structure no. 33 0296
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 141 ft
- 1 main span
- Daily traffic
- 201,000
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 580 over Webster Street is a concrete box beam or girders - multiple carrying Interstate 580 over Webster Street in Alameda County, California. It was built in 1961, so it is 64 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 201,000 vehicles a day, roughly 1% of them trucks, projected to reach 332,045 by 2042. The structure is 141 ft (43 m) long and 183 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 580 over Webster Street built?
It was built in 1961, making it 64 years old in 2025.
What condition is Interstate 580 over Webster Street 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 August 2024.
How much traffic does Interstate 580 over Webster Street carry?
About 201,000 vehicles per day (2017 count), of which roughly 1% are trucks.
How long is Interstate 580 over Webster Street?
The structure is 141 ft (43 m) long with a longest span of 69 ft (21 m) and a deck 183 ft wide.
Who owns Interstate 580 over Webster Street?
It is owned by the State Highway Agency.