San Diego, CA, January 16, 2026
A significant sinkhole has developed on Morena Boulevard in San Diego, leading to the closure of several lanes and affecting traffic flow. The sinkhole appeared overnight following a water main break, prompting a Sig Alert from authorities. Motorists are urged to seek alternate routes as the closures are expected to last 24 to 48 hours. Local businesses in the area are also facing disruptions due to a boil water notice.
San Diego, CA: Large Sinkhole on Morena Boulevard Causes Lane Closures
San Diego, CA – A significant sinkhole formed on Morena Boulevard in San Diego’s Morena neighborhood overnight, leading to the closure of multiple lanes and disrupting traffic flow. The incident occurred around midnight at the intersection of Morena Boulevard and Napa Street, following a water main break in the area. As of 7:30 a.m., all southbound lanes between Buenos Avenue and Linda Vista Road were closed, with only one northbound lane remaining open. Authorities have issued a Sig Alert, anticipating that the closures will last between 24 to 48 hours. Motorists are advised to seek alternative routes and expect delays.
Details of the Incident
The sinkhole emerged due to a water main break, which caused the roadway to buckle and create a substantial hole. City crews responded promptly to isolate the break, shut off the water flow, and begin repairs. This affected area is already undergoing construction as part of the City’s Pure Water program, which includes the Morena Pump Station and an offsite conveyance pipeline project. This ongoing construction has led to repeated lane shifts and repairs in the vicinity.
Impact on Traffic and Local Businesses
In addition to the lane closures, a boil water notice has been issued to the 10 impacted businesses in the area. The City is providing water wagons and bottles to these establishments to mitigate the disruption. Drivers are encouraged to avoid the area and follow posted detours to minimize traffic congestion.
Background Context
This incident is not the first water main break in the Morena area. In May 2024, a 16-inch cast-iron water main ruptured nearby, flooding businesses and leading to extended repair work. The recurrence of such issues highlights the ongoing challenges with infrastructure in this region.
Key Features of the Incident
| Feature | Details |
|---|---|
| Location | Morena Boulevard and Napa Street, San Diego, CA |
| Cause | Water main break leading to a sinkhole |
| Lane Closures | All southbound lanes closed; one northbound lane open |
| Estimated Duration | 24 to 48 hours |
| Impact on Businesses | Boil water notice issued to 10 businesses; water wagons and bottles provided |
| Previous Incidents | May 2024: 16-inch cast-iron water main rupture causing flooding and extended repairs |
Frequently Asked Questions (FAQ)
What caused the sinkhole on Morena Boulevard?
The sinkhole was caused by a water main break at the intersection of Morena Boulevard and Napa Street, leading to the formation of the sinkhole.
How long will the lane closures last?
Authorities have issued a Sig Alert, anticipating that the lane closures will last between 24 to 48 hours.
Are businesses in the area affected?
Yes, a boil water notice has been issued to the 10 impacted businesses in the area. The City is providing water wagons and bottles to these establishments to mitigate the disruption.
Is this the first water main break in the Morena area?
No, in May 2024, a 16-inch cast-iron water main ruptured nearby, flooding businesses and leading to extended repair work.
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