Proposed Routes & Existing Crossings The following are the towns, roads, and border crossings that should be followed by the BorderTransportationSystem route.  Some of the proposed route is best built in Mexico and some in the U.S.A..   Note that many of the towns with crossings have dual crossings, one for the vehicles and pedestrians and another for commercial truck traffic.  There may also be a railroad crossing in some locations.  Additionally, many of the crossings are in the center of the population areas and therefore, will be difficult to design around without destroying homes and businesses.  Index of ... Border Friendship Park, Cal 35 Border Crossings plus Otay International Border, Cal Tecate Port of Entry, Cal Jacumba Hot Springs, Cal Calexico / Mexicali, Cal Los Algodones, Colorado river San Luis, Route 2 in Mexico end Route 2, Sonoyta Mexico Sasabe border crossing Nogales, Arizona crossing Naco, Arizona crossing Douglas, Arizona crossing Route 2 in Mexico End Route 2, sharp north turn Desert, sharp turn east Puerto Palomas, Mexico County Route 9 to El Paso El Paso crossing Route 375 south Route 2 in Mexico, El Porvenir Rio Grande River, winding Big Bend National Park Langtry, US-90 Del Rio US-377 Del Rio US-277 Piedras Negras crossing El Indio Highway Route 1021 Eagle Pass Road Route 1021 Mines Road Route 1472 Hidalgo Mexico crossing Laredo, Texas US-83 Nueva Ciudad Guerrero Ciudad Miguel Aleman McAllen / Reynosa US-281 at Alamo in Pharr Brownsville / Matamoros Brownsville Port Isabel Highway