Los Angeles ST over Big Dalton Wash
FairLos Angeles County, California · 300FT W/O Azusa Cyn RD · Structure no. 53C0676
- Built
- 1959
- 66 years old, rebuilt 2011
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 114 ft
- 1 main span
- Daily traffic
- 8,826
- 2017 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Los Angeles ST over Big Dalton Wash is a prestressed concrete stringer/multi-beam or girder carrying Los Angeles ST over Big Dalton Wash in Los Angeles County, California. It was built in 1959 and reconstructed in 2011, so it is 66 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 5 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 8,826 vehicles a day, roughly 1% of them trucks, projected to reach 10,150 by 2041. The structure is 114 ft (34.6 m) long and 85 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Los Angeles ST over Big Dalton Wash built?
It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2011.
What condition is Los Angeles ST over Big Dalton Wash 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 April 2023.
How much traffic does Los Angeles ST over Big Dalton Wash carry?
About 8,826 vehicles per day (2017 count), of which roughly 1% are trucks.
How long is Los Angeles ST over Big Dalton Wash?
The structure is 114 ft (34.6 m) long with a longest span of 86 ft (26.2 m) and a deck 85 ft wide.
Who owns Los Angeles ST over Big Dalton Wash?
It is owned by the City or Municipal Highway Agency.