Vancouver Skytrain Light Rail System?-?Vancouver,?British Columbia
Kiewit has been constructing projects for the development of Vancouver's Skytrain light rail system for more than three decades. In the early 1980s, over 1,000 guideway beams were erected and trackwork was installed by personnel in preparation for Vancouver hosting the 1986 World's Fair. In the 1990s, Kiewit constructed the substructure, guideway beams and superstructure for a 4.3 km., $39 million Whalley extension. Most recently, crews constructed several portions of guideway on the Lougheed, Front Street and Grandview segments.
The Lougheed segment involved 800 meters of elevated guideway, substructure and cast-in-place deck. A large portion required drilled caisson footings due to a restricted work area. The Front Street segment includes 230 meters of elevated guideway over several existing rail lines and Front Street. The substructure on this segment consists of three piers founded on timber pile densified soil, while the superstructure is a 550-tonne structural steel tub with a cast-in-place deck. The Grandview segment is 1,100-meter guideway structure. Since this portion of the transit line parallels an existing rail line at a higher elevation, a mechanically stabilized earth retaining wall was required to construct the new line within this narrow corridor.