prior to september 2012, pedestrians walked from the u.s. to mexico by crossing a pedestrian bridge, entering mexico to the west of interstate 5, and walking through a corridor leading to the west side of the crossing (avenida de la amistad). then a temporary pedestrian crossing facility was built on the mexican side on the east side of the crossing. this was replaced when in august 2015 mexico inaugurated a new pedestrian crossing facility to the east of the northbound traffic lanes. for the first time foreigners are required to show passports when entering mexico at the border, whereas previously they only had to be shown when entering the interior of the country.