S California Blvd over Las Trampas Creek
FairContra Costa County, California · 0.1 MI N Newell Ave · Structure no. 28C0187
- Built
- 1958
- 67 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 136 ft
- 3 main spans
- Daily traffic
- 20,800
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
S California Blvd over Las Trampas Creek is a steel continuous stringer/multi-beam or girder carrying S California Blvd over Las Trampas Creek in Contra Costa County, California. It was built in 1958, so it is 67 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 20,800 vehicles a day, roughly 5% of them trucks, projected to reach 45,338 by 2047. The structure is 136 ft (41.5 m) long and 66 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S California Blvd over Las Trampas Creek built?
It was built in 1958, making it 67 years old in 2025.
What condition is S California Blvd 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 January 2025.
How much traffic does S California Blvd over Las Trampas Creek carry?
About 20,800 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is S California Blvd over Las Trampas Creek?
The structure is 136 ft (41.5 m) long with a longest span of 60 ft (18.3 m) and a deck 66 ft wide.
Who owns S California Blvd over Las Trampas Creek?
It is owned by the City or Municipal Highway Agency.