AC Collector Lines – 138 kV & 230 kV

Client: Manitoba Hydro

Length: 160 km

Completion Date: April 2018

Location: Gillam, MB


  • Four 3 phase transmission lines (27 km each)
  • Guyed and self-supporting steel lattice towers
  • 108 km of 1590 MCM ACSR and 52 km of 2-bundle 795 Drake ACSR with 2-OHGW
  • Precast concrete footings, precast concrete anchors, helical piles, micropiles
  • Environmental and construction access matting
  • Extreme weather conditions (-55C with wind chill), strong winds, heavy snowfall and winter storms


Forbes constructed over 400 km of winter road and access construction to accommodate seasonal construction windows for this project.