State Route 91 over San Gabriel River
GoodLos Angeles County, California · 07-LA-091-R16.62-BFL · Structure no. 53 1698
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 277 ft
- 2 main spans
- Daily traffic
- 242,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 91 over San Gabriel River is a concrete continuous box beam or girders - multiple carrying State Route 91 over San Gabriel River in Los Angeles County, California. It was built in 1968, so it is 57 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 242,000 vehicles a day, roughly 12% of them trucks, projected to reach 258,112 by 2040. The structure is 277 ft (84.4 m) long and 178 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. |
| 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 91 over San Gabriel River built?
It was built in 1968, making it 57 years old in 2025.
What condition is State Route 91 over 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 August 2023.
How much traffic does State Route 91 over San Gabriel River carry?
About 242,000 vehicles per day (2019 count), of which roughly 12% are trucks.
How long is State Route 91 over San Gabriel River?
The structure is 277 ft (84.4 m) long with a longest span of 141 ft (43 m) and a deck 178 ft wide.
Who owns State Route 91 over San Gabriel River?
It is owned by the State Highway Agency.