The fire hydrant was damaged in a minor traffic collision.
Water is covering the roadway and quickly turning to ice with temperatures in the -14 C range.
Northbound Weston at Rogers is closed to traffic
CBC Toronto traffic reporter Laurie Turcotte recommends drivers avoid the area.
The TTC's 89 Weston and 161 Rogers buses are diverting both ways via Keele, Eglinton and Black creek drive.