Alderman O'Shea said CSX has coordinated with the Chicago Department of Transportation and other municipalities for the maintenance work.
O'Shea said each crossing will take up to two weeks to complete, barring severe weather or unexpected delays.
The roads will be closed so crews can replace cross ties and repave asphalt approached.
Work schedule:
June 17 - July 1: 105th near S. Rockwell Street in Chicago
June 17 - July 1: 107th near S. Rockwell Street in Chicago
June 19 - July 3: 99th near S. Rockwell Street in Evergreen Park
July 8 - July 22: South Park Avenue in South Holland