Construction/Other Notices CTA One-Pager – Roscoe/Sheffield Construction Work Multiple Impacts | Feb 17-24th | Sheffield & Roscoe Street Closure | Feb 17-24th | School St from Sheffield-Wilton Alley Closure | Feb 7-Apr 4th | Alley East of 3301-3349 N Sheffield Alley Closure | Feb 14-Apr 4th | Alley East of 3217-3257 N Sheffield Wilton Northbound Only | Feb 14-17th Partial Alley Closure | Feb 7-Mar 24th | 1014-1038 W Roscoe Alley West of 918 W School & 3324–3328 N Clark