Major CTA track work disrupts Loop ‘L' service this weekend. What to know

Saturday and running through 2 a.m. Monday. In total, 11 L stations are impacted. The transit agency said it’s performing track maintenance at the Tower 18 rail junction at Lake and Wells, one of the busiest rail interlockings in the nation. The agency says the junction requires this type of upkeep about once every decade. Here s how each line is affected: Pink Line trains after Polk will be rerouted to the Racine Blue Line station, but will not operate into the Loop. Instead, the Blue Line will take riders downtown. Brown Line trains will only run between Kimball and Merchandise Mart; the Red Line might be a good option instead. Shuttle buses are also running, making stops near Loop stations. Trains on the Orange Line will operate between Midway Airport and Roosevelt, with shuttle buses operating between Roosevelt and Clinton. Trains on the Green Line will be running between Harlem/Lake and Clinton. They will also operate between Roosevelt and the South Side terminus of the Green Line, but shuttle service will replace trains between Clinton and Roosevelt.