Caltrans briefly closing last exit on southbound I-5 before border
SAN DIEGO (FOX 5/KUSI) — Caltrans crews are planning to temporarily close the last exit on southbound Interstate 5 before reaching the U.S.-Mexico border for construction work.
The overnight closure to the Camino De La Plaza exit will begin Tuesday, June 17 at 9 p.m. and last until Wednesday, June 18 at 6 a.m. During that time, Caltrans says it will be installing a pipe in the area as part of ongoing infrastructure improvements.
Signs will be posted to alert motorists to the closure. Those headed southbound but do not intend to enter Mexico at the San Ysidro Port-of-Entry will need to get off at the Via De San Ysidro Boulevard exit.
Woman critically injured after being struck by vehicle in Talmadge
'Motorists who do not exit in time will be directed across the border into Mexico,' Caltrans officials say. 'Please plan ahead, allow extra travel time, and use alternate routes when possible.'
A map of the detour can be found below.
Per Caltrans, additional lane closures on southbound I-5 may be in place as precautionary measures to protect the workers who will be installing the pipe.
See real-time road conditions on the FOX 5/KUSI Live Traffic Map
The agency adds residents nearby the roadway may experience extra traffic due to the work, mostly along the detour route. Construction noise and bright lights may also impact the area.
For real-time traffic information, such as road closures and traffic speeds, state officials encourage drivers to use the online QuickMap.
Caltrans notes all construction work is subject to change due to weather, traffic incidents and other maintenance considerations.
Copyright 2025 Nexstar Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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