Since fall 2021, York Region contractors have been rehabilitating a 1.5-kilometre section of the York Durham Sewage System that extends under
- 16th Avenue (Regional Road 73) between west of Williamson Road to west of Mingay Avenue
in the City of Markham.
The project includes:
- installing a temporary sewage bypass pipe;
- rehabilitating two access shafts;
- relining the trunk sewer; and
- other work.
Starting 9 p.m. Friday, July 5, the Region and City are closing
- Markham Road (Regional Highway 48), north- and southbound lanes, north of 16th Avenue
to accommodate the next phase of the project.
The Region is also restricting traffic lanes on:
- 16th Avenue, east and west of Markham Road / Main Street North; and
- Main Street North, south of 16th Avenue.
The TTC is detouring buses along this route, while the street is closed:
- 102 Markham Rd.
Closing this part of Markham Road to traffic likely requires GO Transit to detour buses along these routes:
- 70 Uxbridge / Stouffville / Markham; and
- 71 Uxbridge / Stouffville / Toronto.
However, GO has not announced detour-routing information.
Also, York Region Transit passengers aboard buses along this route can expect delays near Markham Road / Main Street North:
- 16 16th Avenue.
This phase of construction on Markham Road and 16th Avenue and the resulting GO, TTC and YRT service changes continue until July 8 (7 a.m.).
102D Markham Rd
From 7 p.m. Friday, July 15 until 7 a.m. Monday, July 18, southbound buses operate along their regular route to Markham Road and Edward Jeffreys Avenue, then detour:
westward along Edward Jeffreys;
southward along Mingay Avenue; and then
eastward along 16th Avenue to Markham Road / Main Street North,
resuming their regular route southward along Main North.Southbound buses skip their regular stops
- on Markham Road beside #9350 Markham and at 16th Avenue.
Northbound buses operate along their regular route to Main Street North and 16th Avenue, then detour:
eastward along 16th;
northward along Williamson Road; and then
westward along Bur Oak Avenue to Markham Road,
resuming their regular route northward along Markham.Northbound buses skip their regular stops
- on Markham Road beside #9375 Markham, across from Edward Jeffreys Avenue and at Bur Oak Avenue.