N680-E580 Conn over E580&S680 Off San Ramon
FairAlameda County, California · 04-ALA-680-R20.01-PLE · Structure no. 33 0643G
- Built
- 2001
- 24 years old
- Condition
- Fair
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 1,817 ft
- 10 main spans
- Daily traffic
- 158,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
N680-E580 Conn over E580&S680 Off San Ramon is a prestressed concrete continuous box beam or girders - multiple carrying N680-E580 Conn over E580&S680 Off San Ramon in Alameda County, California. It was built in 2001, so it is 24 years old, younger 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 158,000 vehicles a day, roughly 10% of them trucks, projected to reach 210,237 by 2042. The structure is 1,817 ft (553.8 m) long and 43 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N680-E580 Conn over E580&S680 Off San Ramon built?
It was built in 2001, making it 24 years old in 2025.
What condition is N680-E580 Conn over E580&S680 Off San Ramon 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 April 2024.
How much traffic does N680-E580 Conn over E580&S680 Off San Ramon carry?
About 158,000 vehicles per day (2009 count), of which roughly 10% are trucks.
How long is N680-E580 Conn over E580&S680 Off San Ramon?
The structure is 1,817 ft (553.8 m) long with a longest span of 225 ft (68.6 m) and a deck 43 ft wide.
Who owns N680-E580 Conn over E580&S680 Off San Ramon?
It is owned by the State Highway Agency.