Interstate 15 over Mtdb Lrt Sdivrr Imperial
FairSan Diego County, California · 11-SD-015-1.49-SD · Structure no. 57 0496
- Built
- 1951
- 74 years old, rebuilt 1996
- Condition
- Fair
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 322 ft
- 4 main spans
- Daily traffic
- 138,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 over Mtdb Lrt Sdivrr Imperial is a concrete continuous box beam or girders - multiple carrying Interstate 15 over Mtdb Lrt Sdivrr Imperial in San Diego County, California. It was built in 1951 and reconstructed in 1996, so it is 74 years old, older 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 138,000 vehicles a day, roughly 5% of them trucks, projected to reach 151,000 by 2041. The structure is 322 ft (98.1 m) long and 118 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Mtdb Lrt Sdivrr Imperial built?
It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1996.
What condition is Interstate 15 over Mtdb Lrt Sdivrr Imperial 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 March 2023.
How much traffic does Interstate 15 over Mtdb Lrt Sdivrr Imperial carry?
About 138,000 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is Interstate 15 over Mtdb Lrt Sdivrr Imperial?
The structure is 322 ft (98.1 m) long with a longest span of 116 ft (35.4 m) and a deck 118 ft wide.
Who owns Interstate 15 over Mtdb Lrt Sdivrr Imperial?
It is owned by the State Highway Agency.