Service on the <a href="http://www.chicagotribune.com/topic/travel/commuting/chicago-transit-authority-ORGOV000082.topic" title="Chicago Transit Authority" class="taxInlineTagLink" id="ORGOV000082">CTA</a>'s Red Line between the Fullerton and Cermak-Chinatown stations will be suspended in both directions over the weekend to facilitate repair work.<br /> <br /> That is in addition to similar service interruptions announced earlier for a stretch of the O'Hare branch of the Blue Line.