sentences:  Although the Steeles Avenue widening has a construction schedule with construction planned to start in 2020, no timeline or construction schedule for the extension of Morningside north of Oasis Boulevard has been determined.Donald Cousens Parkway will be extended north from Major Mackenzie Drive to tie in with Highway 48, becoming the through-route in the process and completing the Markham Bypass.Poor soil conditions at a planned overpass of the Stouffville GO Train line have required several years of ongoing soil consolidation, beginning in July 2012 and scheduled for completion in the fall of 2017.