Through the early 1970s, Newark had a single terminal building located on the north side of the field, by what is now Interstate 78. In the 1970s the airport became "Newark International Airport". Present Terminals A and B opened in 1973, although some charter and international flights requiring customs clearance remained at the North Terminal. The main building of Terminal C was completed at the same time, but only metal framing work was completed for the terminal's satellites. It lay dormant until the mid-1980s, when for a brief time the west third of the terminal was equipped for international arrivals and used for some People Express transcontinental flights. Terminal C was finally completed and opened in June 1988.