Interstate 580 EB over Tassajara Creek
FairAlameda County, California · 04-ALA-580-18.32-PLE · Structure no. 33 0015L
- Built
- 1966
- 59 years old, rebuilt 2015
- Condition
- Fair
- inspected February 2024
- Type
- Slab
- Concrete Continuous
- Length
- 94 ft
- 3 main spans
- Daily traffic
- 102,500
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 580 EB over Tassajara Creek is a concrete continuous slab carrying Interstate 580 EB over Tassajara Creek in Alameda County, California. It was built in 1966 and reconstructed in 2015, so it is 59 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 102,500 vehicles a day, roughly 14% of them trucks, projected to reach 154,038 by 2046. The structure is 94 ft (28.7 m) long and 103 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 580 EB over Tassajara Creek built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2015.
What condition is Interstate 580 EB over Tassajara 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 February 2024.
How much traffic does Interstate 580 EB over Tassajara Creek carry?
About 102,500 vehicles per day (2017 count), of which roughly 14% are trucks.
How long is Interstate 580 EB over Tassajara Creek?
The structure is 94 ft (28.7 m) long with a longest span of 32 ft (9.8 m) and a deck 103 ft wide.
Who owns Interstate 580 EB over Tassajara Creek?
It is owned by the State Highway Agency.