Interstate 680 SB over UP BNSF AMTRAK Suisun Ba
FairContra Costa County, California · 04-CC-680-25.04L-MTZ · Structure no. 28 0153L
- Built
- 1962
- 63 years old, rebuilt 1991
- Condition
- Fair
- inspected September 2023
- Type
- Truss - Deck
- Steel
- Length
- 6,215 ft
- 10 main spans
- Daily traffic
- 115,000
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 680 SB over UP BNSF AMTRAK Suisun Ba is a steel truss - deck carrying Interstate 680 SB over UP BNSF AMTRAK Suisun Ba in Contra Costa County, California. It was built in 1962 and reconstructed in 1991, so it is 63 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 115,000 vehicles a day, roughly 8% of them trucks, projected to reach 131,000 by 2040. The structure is 6,215 ft (1,894.3 m) long and 77 ft wide. If it were closed, the detour would be 29.2 mi (47 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 680 SB over UP BNSF AMTRAK Suisun Ba built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1991.
What condition is Interstate 680 SB over UP BNSF AMTRAK Suisun Ba 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 September 2023.
How much traffic does Interstate 680 SB over UP BNSF AMTRAK Suisun Ba carry?
About 115,000 vehicles per day (2015 count), of which roughly 8% are trucks.
How long is Interstate 680 SB over UP BNSF AMTRAK Suisun Ba?
The structure is 6,215 ft (1,894.3 m) long with a longest span of 528 ft (160.9 m) and a deck 77 ft wide.
Who owns Interstate 680 SB over UP BNSF AMTRAK Suisun Ba?
It is owned by the State Highway Agency.