The John F. Kennedy Expressway is a 17.8-mile-long freeway in metropolitan Chicago, Illinois, in the United States that travels northwest from the neighborhood of West Loop to O'Hare International Airport. The highway is named for the 35th U.S. President, John F. Kennedy, and conforms to the Chicago-area convention of using the term Expressway for an Interstate Highway without tolls. The Interstate 90 (I-90) portion of the Kennedy is a part of the much longer I-90 (which runs 3,111.52 miles from Boston, Massachusetts to Seattle, Washington). The Kennedy's official endpoints are the Circle Interchange with Interstate 290 (Eisenhower Expressway/Congress Parkway) and the Dan Ryan Expressway (also I-90/94) at the east end, and the O'Hare Airport terminals at the west end. The Interstate 190 portion of the Kennedy is 3.07 miles long and is meant to serve airport traffic. Interstate 90 picks up the Kennedy designation and runs a further 6.29 miles, before joining with I-94 for the final 8.44 miles.