EdwardEdm
Active Member
Calgary used a gantry crane for their WLRT extension, which crossed over a multi track CP mainline.I think part of the challenge with the SE segment was the challenge with the CPR tracks, and other obstacles. The Gantry crane lifts smaller loads, and is more mobile. The SE line had more streets to cross (98 Avenue, Argyll, Coronet, Wagner, 75 Street, along with Whitemud Drive. Of course, there were other challenges.