Diablo RD-S680 on over San Ramon Creek
GoodContra Costa County, California · 04-CC-680-R7.43 · Structure no. 28 0197K
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 204 ft
- 3 main spans
- Daily traffic
- 4,750
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Diablo RD-S680 on over San Ramon Creek is a prestressed concrete continuous box beam or girders - multiple carrying Diablo RD-S680 on over San Ramon Creek in Contra Costa County, California. It was built in 1975, so it is 50 years old, younger 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 4,750 vehicles a day, roughly 6% of them trucks, projected to reach 7,607 by 2044. The structure is 204 ft (62.2 m) long and 26 ft wide.
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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Diablo RD-S680 on over San Ramon Creek built?
It was built in 1975, making it 50 years old in 2025.
What condition is Diablo RD-S680 on over San Ramon Creek 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 July 2024.
How much traffic does Diablo RD-S680 on over San Ramon Creek carry?
About 4,750 vehicles per day (2009 count), of which roughly 6% are trucks.
How long is Diablo RD-S680 on over San Ramon Creek?
The structure is 204 ft (62.2 m) long with a longest span of 82 ft (25 m) and a deck 26 ft wide.
Who owns Diablo RD-S680 on over San Ramon Creek?
It is owned by the State Highway Agency.