The South Shore Line is an electrically powered interurban commuter rail line operated by the Northern Indiana Commuter Transportation District (NICTD) between Millennium Station in downtown Chicago and the South Bend International Airport in South Bend, Indiana, United States. The name refers to both the physical line and the service operated over that route. The line was built in 1901–1908 by predecessors of the Chicago South Shore and South Bend Railroad, which continues to operate freight service. Passenger operation was assumed by the NICTD in 1989. The South Shore Line is one of the last surviving interurban trains in the United States. In , the system had a ridership of , or about per weekday as of . Route Departing South Bend Airport, the South Shore Line heads south alongside Bendix Drive, then west along Westmoor Street, before connecting with the tracks that ran to its former terminus. Between that point and Hudson Lake, Indiana, the South Shore Line runs parallel to Norfolk Southern's Chicago Line, also used by Amtrak's Lake Shore Limited and Capitol Limited, on the north side of the tracks. Just before Hudson Lake, the line crosses from St. Joseph County into LaPorte County and enters the Central Time Zone. From Hudson Lake, the South Shore continues straight west to Michigan City. In Michigan City, the track runs down the middle of 11th street from Michigan Boulevard to Tennessee Street, where it crosses over to Tenth Street, and has an at-grade diamond with Amtrak's Michigan Services. The track then runs down Tenth Street to Sheridan Avenue on the west side of Michigan City. Leaving Michigan City, the track travels through Indiana Dunes State Park, crosses over the Chicago Line and runs parallel to it, this time on the south side, past Long Lake. At Gary, Indiana, the route heads west to service the Gary Airport, at times running parallel to the Indiana Toll Road, as far as Hammond, Indiana. Just west of the Hammond station, the route crosses into Illinois and Chicago city limits, at which point the track curves northwest, through the Hegewisch neighborhood and, after crossing the Bishop Ford Freeway and the Calumet River, converges with the Metra Electric line south of Kensington/115th Street station. The South Shore Line then runs over the Metra Electric from Kensington/115th Street the rest of the way to Millennium Station. The line is quadruple tracked along the section shared