Interstate 15 over Market Street
GoodSan Diego County, California · 11-SD-015-1.85-SD · Structure no. 57 0497
- Built
- 1954
- 71 years old, rebuilt 1996
- Condition
- Good
- inspected March 2023
- Type
- Slab
- Concrete Continuous
- Length
- 146 ft
- 4 main spans
- Daily traffic
- 114,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 over Market Street is a concrete continuous slab carrying Interstate 15 over Market Street in San Diego County, California. It was built in 1954 and reconstructed in 1996, so it is 71 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 114,000 vehicles a day, roughly 5% of them trucks, projected to reach 152,005 by 2041. The structure is 146 ft (44.5 m) long and 155 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 15 over Market Street built?
It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1996.
What condition is Interstate 15 over Market Street 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 March 2023.
How much traffic does Interstate 15 over Market Street carry?
About 114,000 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is Interstate 15 over Market Street?
The structure is 146 ft (44.5 m) long with a longest span of 48 ft (14.6 m) and a deck 155 ft wide.
Who owns Interstate 15 over Market Street?
It is owned by the State Highway Agency.