Chicago's Skyway Toll Bridge

Interstate 90 (I-90) in the U.S. state of Illinoisruns roughly northwest-to-southeast through the northern part of the state, from theWisconsin state line near Rockford to theIndiana state line at Chicago. I-90 traverses 108 miles (174 km) through a variety of settings, from farmland west of the Fox River Valley through the medium-density suburban west of O'Hare International Airport, through downtown Chicago, and through the heart of the industrial southeast side of Chicago before entering Indiana.

I-90 comprises several named highways. The Interstate runs along the Jane Addams Memorial Tollway from Rockford to O'Hare Airport, the Kennedy Expressway runs from O'Hare to the Chicago Loop, the Dan Ryan Expressway from the Loop to the Chicago Skyway, and the Skyway to the Indiana state line. The Jane Addams and Chicago Skyway are toll roads maintained by the Illinois State Toll Highway Authority and Skyway Concession Company, respectively. The remainder of the highway is maintained by the Illinois Department of Transportation.

The Chicago Skyway, also known as Chicago Skyway Toll Bridge System, is a 7.8-mile-long (12.6 km) toll road in Chicago carrying I-90 from the Indiana Toll Road to the Dan Ryan Expressway on Chicago's South Side. The main feature of the Skyway is a 1⁄2-mile-long (0.80 km) steel truss bridge, known as the "High Bridge". The toll bridge spans theCalumet River and Calumet Harbor, a major harbor for industrial ships. The main span is 650 feet (200 m) long, provides for 125 feet (38 m) of vertical clearance, and is the highest road in Chicago.

The Jane Addams Tollway was built in the late 1950s and early 1960s as the Northwest Tollway. It was renamed in 2007 afterAddams, the Nobel laureate and founder of the Settlement House movement in the United States. Between 2001 and 2004, authorities spent $250 million to rebuild much of the Chicago Skyway