Crossing Main Highways The current highway crossings to and from the U.S.A. and Mexico are controlled by our Border Patrol, and should not be a problem for the BorderTransportationSystem that will be passing over the existing maintained U.S.A. / Mexico crossing roads. By raising the BorderTransportationSystem above the existing and roads, the crossings will be dependent on the existing Border Crossings, but additionally sensors and and monitoring should be considered. Index of ... Border Crossing/Entry Data Border Crossing/Entry Data: Query Detailed Statistics - Database calculator