When: Thursday, December 11, 2025 at 10 p.m. to Tuesday, December 16, 2025 at 7 p.m.

Where: Mulock Drive, between Cane Parkway and Kent Drive, Town of Newmarket

Reason: Railway Rehabilitation

Routes affected: 57 - Mulock, 420 - Newmarket School Special via Savage and 423 – Newmarket School Special via Bristol 


Detours:

Route 57 - Mulock

Eastbound:

Buses will turn left on Sandford Street, right on Eagle Street, continue on Water Street, turn right on Prospect Street, continue on Bayview Avenue, turn left on Mulock Drive, and back to regular routing.

Stops missed: 1990, 1991, 1992, 1993 and 1994 

Westbound: 

Buses will follow reverse routing.

Stops missed: 2012, 2013, 2014 and 2015 

Route 420- Newmarket School Special via Savage

Morning Service:

Buses will continue straight on Sandford Street, turn right on Eagle Street, continue on Water Street, turn right on Prospect Street, continue on Bayview Avenue, turn left on eastbound Mulock Drive, and back to regular routing.

Stops missed: 1990, 1991, 1992, 1993 and 1994

Afternoon Service:

Buses will follow reverse routing.

Stops missed: 2012, 2013, 2014 and 2015 

Route 423 - Newmarket School Special via Bristol

Morning Service:

Buses will turn right on Mulock Drive, left on Yonge Street, left on St John’s Sideroad, left on Bayview Avenue, right on Mulock Drive, and back to regular routing. 

Stops missed: 1991, 1992, 1993, and 1994 

Afternoon Service:

Buses will follow reverse routing.

Stops missed: 2011, 2012, 2013, 2014 and 2015 

Alternate stops:

Routes 57 and 420:

  • 2011 on Mulock Drive at Bayview Avenue
  • 4640 on Sandford Street at Mulock Drive
  • 4654 on Sanford Street at Lloyd Avenue
  • 5549 on Mulock Drive east of Bayview Avenue

Route 423:

  • 4621 on Mulock Drive at College Manor Drive
  • 5549 on Mulock Drive east of Bayview Avenue

Please plan ahead and allow yourself extra travel time. For trip planning assistance, call the YRT Contact Centre at 1-866-668-3978.