Moraga Blvd over Las Trampas Creek
PoorContra Costa County, California · 0.2 MI E First ST · Structure no. 28C0332
- Built
- 1937
- 88 years old, rebuilt 1962
- Condition
- Poor
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 65 ft
- 5 main spans
- Daily traffic
- 2,200
- 2016 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 1937 and reconstructed in 1962, so it is 88 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 2,200 vehicles a day, roughly 1% of them trucks, projected to reach 5,434 by 2040. The structure is 65 ft (19.8 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Moraga Blvd over Las Trampas Creek built?
It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1962.
What condition is Moraga Blvd over Las Trampas Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.
How much traffic does Moraga Blvd over Las Trampas Creek carry?
About 2,200 vehicles per day (2016 count), of which roughly 1% are trucks.
How long is Moraga Blvd over Las Trampas Creek?
The structure is 65 ft (19.8 m) long with a longest span of 20 ft (6.1 m) and a deck 38 ft wide.
Who owns Moraga Blvd over Las Trampas Creek?
It is owned by the City or Municipal Highway Agency.