Mackinnon Ave over Interstate 5
GoodSan Diego County, California · 11-SD-005-R40.12 · Structure no. 57 0530
- Built
- 1964
- 61 years old
- Condition
- Good
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 502 ft
- 2 main spans
- Daily traffic
- 6,860
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Mackinnon Ave over Interstate 5 is a prestressed concrete continuous box beam or girders - multiple carrying Mackinnon Ave over Interstate 5 in San Diego County, California. It was built in 1964, so it is 61 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 6,860 vehicles a day, roughly 2% of them trucks, projected to reach 10,547 by 2047. The structure is 502 ft (153 m) long and 40 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mackinnon Ave over Interstate 5 built?
It was built in 1964, making it 61 years old in 2025.
What condition is Mackinnon Ave over Interstate 5 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 Mackinnon Ave over Interstate 5 carry?
About 6,860 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Mackinnon Ave over Interstate 5?
The structure is 502 ft (153 m) long with a longest span of 166 ft (50.6 m) and a deck 40 ft wide.
Who owns Mackinnon Ave over Interstate 5?
It is owned by the State Highway Agency.