State Route 1 over De Forest Avenue
GoodLos Angeles County, California · 07-LA-001-7.08-LBCH · Structure no. 53 1047
- Built
- 1957
- 68 years old
- Condition
- Good
- inspected December 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 114 ft
- 2 main spans
- Daily traffic
- 38,250
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over De Forest Avenue is a concrete continuous box beam or girders - multiple carrying State Route 1 over De Forest Avenue in Los Angeles County, California. It was built in 1957, so it is 68 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 38,250 vehicles a day, roughly 11% of them trucks, projected to reach 77,684 by 2043. The structure is 114 ft (34.7 m) long and 79 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 over De Forest Avenue built?
It was built in 1957, making it 68 years old in 2025.
What condition is State Route 1 over De Forest Avenue in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.
How much traffic does State Route 1 over De Forest Avenue carry?
About 38,250 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is State Route 1 over De Forest Avenue?
The structure is 114 ft (34.7 m) long with a longest span of 59 ft (18 m) and a deck 79 ft wide.
Who owns State Route 1 over De Forest Avenue?
It is owned by the State Highway Agency.