Gridley Road over State Route 91
GoodLos Angeles County, California · 07-LA-091-R17.57-CRTS · Structure no. 53 1324
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 243 ft
- 4 main spans
- Daily traffic
- 20,730
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Gridley Road over State Route 91 is a concrete continuous box beam or girders - multiple carrying Gridley Road over State Route 91 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 20,730 vehicles a day, roughly 4% of them trucks, projected to reach 21,250 by 2040. The structure is 243 ft (74.1 m) long and 40 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 Gridley Road over State Route 91 built?
It was built in 1968, making it 57 years old in 2025.
What condition is Gridley Road over State Route 91 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 Gridley Road over State Route 91 carry?
About 20,730 vehicles per day (2019 count), of which roughly 4% are trucks.
How long is Gridley Road over State Route 91?
The structure is 243 ft (74.1 m) long with a longest span of 83 ft (25.3 m) and a deck 40 ft wide.
Who owns Gridley Road over State Route 91?
It is owned by the State Highway Agency.