Moraga Blvd over Las Trampas Creek
FairContra Costa County, California · West of Carol Lane · Structure no. 28C0423
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 123 ft
- 3 main spans
- Daily traffic
- 1,590
- 2021 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Moraga Blvd over Las Trampas Creek is a steel continuous stringer/multi-beam or girder carrying Moraga Blvd over Las Trampas Creek in Contra Costa County, California. It was built in 1970, so it is 55 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 1,590 vehicles a day, roughly 1% of them trucks, projected to reach 930 by 2042. The structure is 123 ft (37.5 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Moraga Blvd over Las Trampas Creek built?
It was built in 1970, making it 55 years old in 2025.
What condition is Moraga 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 December 2023.
How much traffic does Moraga Blvd over Las Trampas Creek carry?
About 1,590 vehicles per day (2021 count), of which roughly 1% are trucks.
How long is Moraga Blvd over Las Trampas Creek?
The structure is 123 ft (37.5 m) long with a longest span of 60 ft (18.3 m) and a deck 44 ft wide.
Who owns Moraga Blvd over Las Trampas Creek?
It is owned by the City or Municipal Highway Agency.