Interstate 680 over Las Trampas Creek
FairContra Costa County, California · 04-CC-680-13.72-WLC · Structure no. 28 0162
- Built
- 1960
- 65 years old, rebuilt 1994
- Condition
- Fair
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 182 ft
- 3 main spans
- Daily traffic
- 195,300
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 680 over Las Trampas Creek is a concrete continuous box beam or girders - multiple carrying Interstate 680 over Las Trampas Creek in Contra Costa County, California. It was built in 1960 and reconstructed in 1994, so it is 65 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 195,300 vehicles a day, roughly 6% of them trucks, projected to reach 259,123 by 2044. The structure is 182 ft (55.6 m) long and 201 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 680 over Las Trampas Creek built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1994.
What condition is Interstate 680 over Las Trampas 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 2024.
How much traffic does Interstate 680 over Las Trampas Creek carry?
About 195,300 vehicles per day (2017 count), of which roughly 6% are trucks.
How long is Interstate 680 over Las Trampas Creek?
The structure is 182 ft (55.6 m) long with a longest span of 66 ft (20.2 m) and a deck 201 ft wide.
Who owns Interstate 680 over Las Trampas Creek?
It is owned by the State Highway Agency.