Interstate 15 SB over So Centre City Parkway
FairSan Diego County, California · 11-SD-015-M27.76 · Structure no. 57 0805L
- Built
- 1977
- 48 years old, rebuilt 2011
- Condition
- Fair
- inspected November 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 133 ft
- 1 main span
- Daily traffic
- 110,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 SB over So Centre City Parkway is a prestressed concrete box beam or girders - multiple carrying Interstate 15 SB over So Centre City Parkway in San Diego County, California. It was built in 1977 and reconstructed in 2011, so it is 48 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 110,000 vehicles a day, roughly 7% of them trucks, projected to reach 164,844 by 2042. The structure is 133 ft (40.4 m) long and 94 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 | 7 Good | Some minor problems. |
| 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 15 SB over So Centre City Parkway built?
It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2011.
What condition is Interstate 15 SB over So Centre City Parkway 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 November 2023.
How much traffic does Interstate 15 SB over So Centre City Parkway carry?
About 110,000 vehicles per day (2019 count), of which roughly 7% are trucks.
How long is Interstate 15 SB over So Centre City Parkway?
The structure is 133 ft (40.4 m) long with a longest span of 132 ft (40.1 m) and a deck 94 ft wide.
Who owns Interstate 15 SB over So Centre City Parkway?
It is owned by the State Highway Agency.