The 75th Street Corridor Improvement Project (75th St. CIP) is the largest project in the Chicago Region Environmental and Transportation Efficiency Program, an effort to improve the efficiency of the region’s rail infrastructure. The project is located in the Chicago neighborhoods of Ashburn, Englewood, Auburn Gresham and West Chatham along two passenger and four freight rail lines.

The Illinois Department of Transportation—in partnership with the Federal Highway Administration, the Chicago Department of Transportation, the Association of American Railroads and local communities—is conducting a study to determine how these railroad tracks can be “untangled” so that trains, vehicles, and pedestrians move more easily through these neighborhoods.