Millennium Station depot switch effective EVENINGS/OVERNIGHT ONLY through Thursday, March 12:On March 9, 10, 11 and 12: Beginning at 8 pm, passengers will temporarily board/detrain at the Metra Depot (Tracks 5 and 6). This includes Tr 222, 22, 121, 123 and 101. All morning rush and daily trains will return to normal operations in the South Shore Line depot.During this time, platform work will be conducted in the SSL depot.