State Route 39 over W Fork San Gabriel River
GoodLos Angeles County, California · 07-LA-039-26.96 · Structure no. 53 0342
- Built
- 1962
- 63 years old, rebuilt 1968
- Condition
- Good
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 280 ft
- 3 main spans
- Daily traffic
- 1,618
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 39 over W Fork San Gabriel River is a concrete continuous box beam or girders - multiple carrying State Route 39 over W Fork San Gabriel River in Los Angeles County, California. It was built in 1962 and reconstructed in 1968, so it is 63 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 1,618 vehicles a day, roughly 3% of them trucks, projected to reach 1,950 by 2041. The structure is 280 ft (85.4 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 39 over W Fork San Gabriel River built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1968.
What condition is State Route 39 over W Fork San Gabriel River 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 October 2024.
How much traffic does State Route 39 over W Fork San Gabriel River carry?
About 1,618 vehicles per day (2017 count), of which roughly 3% are trucks.
How long is State Route 39 over W Fork San Gabriel River?
The structure is 280 ft (85.4 m) long with a longest span of 109 ft (33.3 m) and a deck 34 ft wide.
Who owns State Route 39 over W Fork San Gabriel River?
It is owned by the State Highway Agency.