Lake Shore Drive (colloquially referred to as the Outer Drive, but also sometimes as The Drive or LSD) is a mostly freeway-standard expressway running parallel with and alongside the shoreline of Lake Michigan through Chicago, Illinois, USA. Except for the portion north of Foster Avenue (5200 North), Lake Shore Drive is designated as part of U.S. Highway 41.
From the Chicago River south to 57th street was named Leif Ericson Drive in 1927, named for Norse explorer Leif Ericson. The roadway was nicknamed Field Boulevard. The entire road was named Lake Shore Drive in 1946.