Line 4 Sheppard: There is no subway service between Sheppard-Yonge and Don Mills stations due to planned track work. Shuttle buses are running. Started Until (Updated )Line 4 Sheppard: There will be no subway service between Sheppard-Yonge and Don Mills stations, starting 11:59 p.m., nightly Thursday, July 23 to Friday, July 24, due to planned track work. Shuttle buses will operate. Started Thu Jul 23 Until Fri Jul 24 (Updated Thu Jul 23 )