Detour set as last U.S. exit on I-5 in San Diego closing

Dante Ulanday - News Moderator Dante Ulanday - News Moderator
Sep 19, 2025 - 21:06
Detour set as last U.S. exit on I-5 in San Diego closing

SAN DIEGO (FOX 5/KUSI) -- The last U.S. exit on Interstate 5 in southern San Diego County will be closed next week, Caltrans has announced.

The Camino De La Plaza off-ramp from I-5 south in San Ysidro just before the entrance to Mexico, which is the last U.S. exit, will be closed from 9 p.m. on Monday, Sept. 22 to 5 a.m. on Wednesday.

A detour will be in place for those who don't want to cross the border into Mexico. Caltrans says drivers can exit at the Via De San Ysidro Boulevard off-ramp, turn right onto Via De San Ysidro Boulevard then left onto Calle Primera, and continue towards Camino De La Plaza via Willow Road.

The Camino De La Plaza “Last U.S. Exit” off-ramp on 5 south in San Ysidro will close Mon, Sept 22 at 9pm until Wed, Sept 24 at 5 a.m. for pipe installation and infrastructure improvements. (PHOTO: Caltrans San Diego)
The Camino De La Plaza “Last U.S. Exit” off-ramp on 5 south in San Ysidro will close Mon, Sept 22 at 9 p.m. until Wed, Sept 24 at 5 a.m. for pipe installation and infrastructure improvements. (PHOTO: Caltrans San Diego)

Caltrans says the closure will be for pipe installation and infrastructure improvements.

View the latest travel alerts at quickmap.dot.ca.gov.

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