Prince Edward
Viaduct Rehabilitation


City of Toronto


Toronto, Ontario



Toronto Zenith was contracted to rehabilitate the Prince Edward Viaduct, a 475 metre bridge which carries vehicular and TTC subway traffic across the Don Valley Parkway, the Don River, Bayview Avenue and the Metrolinx rail corridor.


  • Perform complex concrete rehabilitation on six intermediate piers and two approaches
  • Repair structural steel and rehabilitate concrete at TTC level
  • Apply concrete sealer to all concrete surfaces

Key Aspects

  • Rope Access personnel removed 400m of Bell conduit suspended to the entire underside of the deck
  • Constructed an intensive hoarding system at TTC level to protect passing subways from concrete repair operations within piers
  • Performed up to 3500m of crack injection on concrete
  • Gained access to 25m high pier face by way of swing stages
  • Allowed for extensive scaffold access
  • Placed over 650m of concrete by utilizing form-and-pump method
  • Assembled elaborate winter heating and curing systems for concrete placements