When: Wednesday, August 5, 2026, to Wednesday, August 19, 2026. The route may resume regular routing before August 19, pending weather conditions and event teardown activities.

Where: Enterprise Boulevard, between Andre De Grasse Street and Main Street Unionville, and on Unionville Gate, between Main Street Unionville and Kennedy Road, City of Markham

Reason: Honda Indy

Routes affected: 304 – Mount Joy Express 

Detour:

Morning buses will turn right on westbound to Highway 7, left on southbound to Birchmount Road and back to regular routing on westbound Enterprise Boulevard. Stops missed: 9748, 1880, 1881, 1882, 5976, 9863 and 7373.

Afternoon trips will follow the reverse routing. Stops missed: 9864, 7372, 6308, 6850, 1909 and 7279.

Alternative stops:

Morning

  • Stop 9862 on Highway 7, west of Kennedy Road
  • Stop 9885 on Highway 7, east of Main Street Unionville
  • Stop 6860 on Birchmount Road, north of Verdale Crossing
  • Stop 6861 on Birchmount Road, north of Enterprise Boulevard

Afternoon

  • Stop 6856 on Birchmount Road, south of Verdale Crossing
  • Stop 9884 on Highway 7, east of Main Street Unionville

Detour Map:

map of route 304 detour route

Please plan ahead and allow yourself extra travel time. For trip planning assistance, contact us at 1-866-668-3978.