Interstate 680 SB over Ygnacio Valley Road
FairContra Costa County, California · 04-CC-680-14.85-WLC · Structure no. 28 0117L
- Built
- 1995
- 30 years old
- Condition
- Fair
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 360 ft
- 3 main spans
- Daily traffic
- 117,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 680 SB over Ygnacio Valley Road is a prestressed concrete continuous box beam or girders - multiple carrying Interstate 680 SB over Ygnacio Valley Road in Contra Costa County, California. It was built in 1995, so it is 30 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 117,500 vehicles a day, roughly 3% of them trucks, projected to reach 205,390 by 2043. The structure is 360 ft (109.8 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 680 SB over Ygnacio Valley Road built?
It was built in 1995, making it 30 years old in 2025.
What condition is Interstate 680 SB over Ygnacio Valley Road 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 January 2025.
How much traffic does Interstate 680 SB over Ygnacio Valley Road carry?
About 117,500 vehicles per day (2009 count), of which roughly 3% are trucks.
How long is Interstate 680 SB over Ygnacio Valley Road?
The structure is 360 ft (109.8 m) long with a longest span of 150 ft (45.7 m) and a deck 71 ft wide.
Who owns Interstate 680 SB over Ygnacio Valley Road?
It is owned by the State Highway Agency.