Interstate 5 runs just east of Downtown Tacoma as it goes through the metro area. After going through Federal Way and the west side of Kent it passes by a major shopping mall, Southcenter in Tukwila, where it connects with the south terminus of Interstate 405. Then the freeway continues and passes by SeaTac International Airport in the inner southern suburbs of Seattle and passes very close to Boeing Field (also known as King County International Airport). As the freeway heads towards Downtown Seattle, reversible lanes, or express lanes, branch off the mainline and continue north through the city. The express lanes carry southbound traffic in the morning and northbound traffic in the afternoon. The Express Lanes merge with the main line in the Northgate area of North Seattle. After that, I-5 continues north through the cities of Shoreline, Mountlake Terrace, and Lynnwood. In Lynnwood it merges with Interstate 405 again. It continues north to the last large city in Seattle Metro area, Everett. It was built in South Tacoma between 1955 and 1957, North Tacoma to Kent between 1959 and 1961, between Kent and downtown Seattle in 1966, from downtown Seattle to Roanoke Street in 1964, from Roanoke Street to Lake City Way/SR 522 in 1960, and north of there to Everett in 1964.