Alternating Full Closures of Southbound 5 and 805 Monday-Wednesday


i5 and i805

District 11

Contact: Edward Cartagena
Caltrans (619) 688-6670

SAN DIEGO——U.S. General Services Administration (GSA) will be implementing alternating, temporary overnight lane closures on the southbound Interstate 5 (I-5) and Interstate 805 (I-805), Monday through Wednesday nights during the hours of 10 p.m. to 7 a.m.

GSA, in partnership with Caltrans, will install new roadway enhancements to better guide southbound motorists to avoid unintentional crossings into Mexico, as part of the U.S. Federal Government’s San Ysidro Port of Entry Modernization and Expansion project.

Southbound I-5 from State Route 905 (SR-905) to the San Ysidro Port of Entry, and the Camino De La Plaza I-5 on-ramp.

Monday and Wednesday from 10 p.m. to 7 a.m.

*Detours will direct motorists to the southbound I-805 freeway via the SR-905 connector.*


Southbound I-805 from SR-905 to the San Ysidro Port of Entry.

Tuesday, from 10 p.m. to 7 a.m.

*Detours will direct motorists to the southbound I-5 freeway via the SR-905 connector.*

Travelers are advised to plan ahead for potential delays, monitor media and traffic reports, and adhere to posted signage which announces changes to freeway patterns on affected roadways - including the last USA exit and speed limits. Southbound traffic through the San Ysidro crossing into Mexico will remain open to vehicular and pedestrian traffic during the detour.
For real-time traffic information including traffic speed, lane and road closures due to construction and maintenance activities, and more, go to

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