San Ysidro Port of Entry
Southbound traffic into the San Ysidro Port of Entry will be closed off for 57 hours beginning Sept. 23 at 3 a.m. File photo courtesy OnScene.TV

For 57 hours — starting Saturday at 3 a.m. and continuing through 12 p.m. Monday — all southbound lanes of Interstate 5 and Interstate 805 will be closed to traffic south of State Route 905 as part of an ongoing improvement project by the U.S. General Services Administration, the San Diego Association of Governments announced Tuesday.

The San Ysidro Port of Entry will also be closed to all southbound traffic into Mexico during the 57-hour shutdown. Southbound pedestrians will still have access to cross, and all travelers — whether in vehicles or on foot — will still be able to cross northbound.

Southbound vehicle traffic will be diverted to the Otay Mesa Port of Entry, according to SANDAG.

Travelers should expect longer than usual wait times at both ports of entry and are encouraged to carpool or use public transit during the closure, SANDAG advised.

Motorists on the I-5 or I-805 will be detoured to SR 905, and access for local businesses and residents will be available, according to SANDAG.

The 57-hour freeway closure is necessary for GSA to realign a portion of the I-5 and to construct new vehicle port of entry lanes, according to SANDAG.

“The closure also will allow crews to safely complete other necessary roadwork and critical tasks as part of improvements to the San Ysidro POE,” according to a SANDAG statement.

View freeway and local road detours on an interactive map at For more information about the closure or the GSA project, go to


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