Interstate 805 over Mira Mesa Blvd
FairSan Diego County, California · 11-SD-805-27.07-SD · Structure no. 57 0785
- Built
- 1972
- 53 years old, rebuilt 2016
- Condition
- Fair
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 170 ft
- 1 main span
- Daily traffic
- 183,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 805 over Mira Mesa Blvd is a prestressed concrete box beam or girders - multiple carrying Interstate 805 over Mira Mesa Blvd in San Diego County, California. It was built in 1972 and reconstructed in 2016, so it is 53 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 183,000 vehicles a day, roughly 5% of them trucks, projected to reach 245,000 by 2042. The structure is 170 ft (51.9 m) long and 256 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Interstate 805 over Mira Mesa Blvd built?
It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2016.
What condition is Interstate 805 over Mira Mesa Blvd in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.
How much traffic does Interstate 805 over Mira Mesa Blvd carry?
About 183,000 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Interstate 805 over Mira Mesa Blvd?
The structure is 170 ft (51.9 m) long with a longest span of 170 ft (51.9 m) and a deck 256 ft wide.
Who owns Interstate 805 over Mira Mesa Blvd?
It is owned by the State Highway Agency.