Langdon to Janet

Client: SNC Lavalin T&D

Length: 24 km

Completion Date: Energized June 2015

Location: Langdon, AB


  • 78 steel lattice towers and steel monopoles
  • Double circuit, twin bundle 1033 Curlew ACSR and 1590 Falcon ACSR
  • Cast in place concrete piles and helical piles
  • Construction of new 240kV lines (18km – 1064L/1065L and 2 km – 1109L/1080L) requiring salvage of 6 km of existing line between two 240kV energized facilities
  • Salvage and rebuild of 4km existing 240kV line (936L/937L), completed using a 10-stage outage program
  • Helicopter and conventional crane erection


The rebuild of the existing 936L/937L was completed using a 10-stage outage program moving circuits onto new facilities one by one.