Grand Ave over San Dimas Wash
GoodLos Angeles County, California · 100FT N/O Arrow HWY · Structure no. 53C0509
- Built
- 1959
- 66 years old
- Condition
- Good
- inspected January 2025
- Type
- Slab
- Concrete
- Length
- 28 ft
- 1 main span
- Daily traffic
- 23,056
- 2017 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Grand Ave over San Dimas Wash is a concrete slab carrying Grand Ave over San Dimas Wash in Los Angeles County, California. It was built in 1959, so it is 66 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 23,056 vehicles a day, roughly 4% of them trucks, projected to reach 34,287 by 2045. The structure is 28 ft (8.6 m) long and 92 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Grand Ave over San Dimas Wash built?
It was built in 1959, making it 66 years old in 2025.
What condition is Grand Ave over San Dimas Wash 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 January 2025.
How much traffic does Grand Ave over San Dimas Wash carry?
About 23,056 vehicles per day (2017 count), of which roughly 4% are trucks.
How long is Grand Ave over San Dimas Wash?
The structure is 28 ft (8.6 m) long with a longest span of 25 ft (7.6 m) and a deck 92 ft wide.
Who owns Grand Ave over San Dimas Wash?
It is owned by the City or Municipal Highway Agency.