Expansion work closes busiest US-Mexico border crossing

SAN DIEGO (AP) — Detoured traffic into Mexico from the busiest border crossing with the United States was unusually light Saturday as motorists heeded calls to avoid freeways during a weekend shutdown for southbound cars.
There were no significant delays on the first day of a 57-hour closure of all Mexico-bound car traffic at the San Ysidro border crossing, where about 50,000 cars and 20,000 pedestrians go back and forth on weekdays.
Motorists who were directed east to the much-smaller Ota