Interstate 805 over 8th Street
FairSan Diego County, California · 11-SD-805-10.61-NATC · Structure no. 57 0644
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 122 ft
- 1 main span
- Daily traffic
- 204,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 805 over 8th Street is a prestressed concrete box beam or girders - multiple carrying Interstate 805 over 8th Street in San Diego County, California. It was built in 1975, so it is 50 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 5 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 204,000 vehicles a day, roughly 6% of them trucks, projected to reach 308,000 by 2042. The structure is 122 ft (37.2 m) long and 184 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 805 over 8th Street built?
It was built in 1975, making it 50 years old in 2025.
What condition is Interstate 805 over 8th Street 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 July 2024.
How much traffic does Interstate 805 over 8th Street carry?
About 204,000 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is Interstate 805 over 8th Street?
The structure is 122 ft (37.2 m) long with a longest span of 122 ft (37.2 m) and a deck 184 ft wide.
Who owns Interstate 805 over 8th Street?
It is owned by the State Highway Agency.