First Ave over Maple Canyon
GoodSan Diego County, California · 2.5 Blks N/O Laurel ST · Structure no. 57C0416
- Built
- 1931
- 94 years old
- Condition
- Good
- inspected April 2024
- Type
- Truss - Deck
- Steel
- Length
- 463 ft
- 4 main spans
- Daily traffic
- 5,765
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
First Ave over Maple Canyon is a steel truss - deck carrying First Ave over Maple Canyon in San Diego County, California. It was built in 1931, so it is 94 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 5,765 vehicles a day, roughly 1% of them trucks, projected to reach 6,724 by 2044. The structure is 463 ft (141.1 m) long and 48 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 | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was First Ave over Maple Canyon built?
It was built in 1931, making it 94 years old in 2025.
What condition is First Ave over Maple Canyon 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 April 2024.
How much traffic does First Ave over Maple Canyon carry?
About 5,765 vehicles per day (2022 count), of which roughly 1% are trucks.
How long is First Ave over Maple Canyon?
The structure is 463 ft (141.1 m) long with a longest span of 200 ft (61 m) and a deck 48 ft wide.
Who owns First Ave over Maple Canyon?
It is owned by the City or Municipal Highway Agency.