State Route 39 over N Fork San Gabriel River
GoodLos Angeles County, California · 07-LA-039-R31.25 · Structure no. 53 2245
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected October 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 220 ft
- 3 main spans
- Daily traffic
- 830
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 39 over N Fork San Gabriel River is a concrete continuous tee beam carrying State Route 39 over N Fork San Gabriel River in Los Angeles County, California. It was built in 1967, so it is 58 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 830 vehicles a day, roughly 3% of them trucks, projected to reach 1,607 by 2041. The structure is 220 ft (67.1 m) long and 32 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 39 over N Fork San Gabriel River built?
It was built in 1967, making it 58 years old in 2025.
What condition is State Route 39 over N 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 N Fork San Gabriel River carry?
About 830 vehicles per day (2017 count), of which roughly 3% are trucks.
How long is State Route 39 over N Fork San Gabriel River?
The structure is 220 ft (67.1 m) long with a longest span of 88 ft (26.8 m) and a deck 32 ft wide.
Who owns State Route 39 over N Fork San Gabriel River?
It is owned by the State Highway Agency.