The West Rail Bypass International Bridge connecting Brownsville, Texas with the city of Matamoros across the border will largely carry freight.
Jonathan Elias, 18, and Brayan Valle, 19, admitted in federal court that they drove to a field in Calexico, California, in April to pick up a bag with 28.6 pounds of heroin that was sent across the border by drone.
The U.S. found 181 tunnels in the border area.
16-year-old José Antonio Elena Rodríguez was in Nogales, Sonora, near a border fence when the U.S. agent shot him from Nogales, Arizona, on October 10, 2012.