Shutdown of large part of TTC’s Yonge subway line because of ‘hazardous’ spill Toronto commuters lining up for shuttle buses: morning chaos TTC commuters lining up along Bloor Street Tuesday due to TTC shutdown of Yonge subway line: environmental leak posing a hazard Sherry Bo/ Toronto Observer By Toronto Observer Staff March 24, 2015 6 Month Timeline of TTC Closures on Dipity. By Samatha McArthur/Toronto Observer Related About this article By: Toronto Observer Staff Posted: Mar 24 2015 10:09 am Edition: Toronto Filed under: News Multimedia: Photo Galleries • Video Topics: Andy Byford • Brad Ross • Toronto Transit Commission