The Boeing International Headquarters (colloquially known as the Boeing Building and formerly known as the Morton International Building) is a 36-floor skyscraper located in the Near West Side of Chicago. The building, at 100 North Riverside Plaza, is located on the west side of the Chicago River directly across from the downtown Loop. The building was designed with a structural system that uses steel trusses to support its suspended southwest corner in order to clear the Amtrak and Metra railroad tracks immediately beneath it. It won the Structural Engineers Association of Illinois' "Most Innovative" Design Award.