What is the name of the busiest land border crossing between the US and Mexico?

The busiest land border crossing between the United States and Mexico is the San Ysidro border crossing, officially called the San Ysidro Port of Entry. It links San Diego, California, with Tijuana, Baja California, and handles enormous volumes of vehicles and pedestrians.

The crossing has served the San Ysidro community since the early twentieth century, with an inspection station operating there by 1906. Its importance grew alongside the close economic and social ties between the San Diego and Tijuana metropolitan areas. Thousands of people cross daily for work, school, shopping and family visits.

San Ysidro is sometimes confused with Laredo, El Paso or Nogales, all major US–Mexico gateways. Those crossings are especially important for freight, regional travel or specific categories of traffic, while San Ysidro is widely recognized for its exceptionally high combined volume of individual crossers and vehicle movements. The facility includes vehicle lanes and separate pedestrian crossings, including SENTRI processing for approved travelers.