Narrative:

Runway 31C at mdw was just worked on and many concrete patches were visible. The runway was extremely rough during the takeoff roll; jarring the aircraft extremely hard during transit of those areas. The construction job was very poor.

Google
 

Original NASA ASRS Text

Title: A B737 Captain advised Runway 31C repairs at MDW are unacceptably rough.

Narrative: Runway 31C at MDW was just worked on and many concrete patches were visible. The runway was extremely rough during the takeoff roll; jarring the aircraft extremely hard during transit of those areas. The construction job was very poor.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.