El Paso PDN Port of Entry
The El Paso Paso del Norte (PDN) Port of Entry, is among the United States' busiest border crossings. More than 10 million people enter the US from Mexico each year at this location. Upon arrival, the admissibility of each person is determined by an officer of Customs and Border Protection (CBP). Frequently the vehicle and/or possessions of those entering the US are inspected by CBP in an effort to prevent contraband from being brought into the US. The PDN Port of Entry is located at the Paso del Norte International Bridge, and is limited  to northbound non-commercial traffic (although pedestrians may also cross the bridge in the southbound direction). Bridges between El Paso and Ciudad Juarez have existed at this location for over 250 years, and they have been rebuilt many times due to floods, expansion and international treaties. PDN is sometimes called the Santa Fe bridge, because its predecessor (prior to 1967) emptied traffic onto Santa Fe Street immediately to the west. Approximately 2000 trains enter the U.S. each year on an adjacent rail bridge. Streetcar traffic also once entered the US on the Paso del Norte Bridge, but that service ended  in 1974. The El Paso PDN Port of Entry ranks second only to the San Ysidro Port of Entry in the number of pedestrians entering the United States from Mexico each year. References