Interstate 680 over San Ramon Creek
FairContra Costa County, California · 04-CC-680-R4.46-DNVL · Structure no. 28 0057
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected July 2022
- Type
- Culvert
- Concrete Continuous
- Length
- 26 ft
- 2 main spans
- Daily traffic
- 176,400
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 680 over San Ramon Creek is a concrete continuous culvert carrying Interstate 680 over San Ramon Creek in Contra Costa County, California. It was built in 1966, 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 6 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 176,400 vehicles a day, roughly 6% of them trucks, projected to reach 230,000 by 2041. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 8.1 mi (13 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 680 over San Ramon Creek built?
It was built in 1966, making it 59 years old in 2025.
What condition is Interstate 680 over San Ramon 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 July 2022.
How much traffic does Interstate 680 over San Ramon Creek carry?
About 176,400 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is Interstate 680 over San Ramon Creek?
The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).
Who owns Interstate 680 over San Ramon Creek?
It is owned by the State Highway Agency.