Subterranean working in Winnipeg with the SA-40 crane attached hydraulic rig.
Winnipeg is the capital and largest city of the Manitoba province, in Canada. With more than the half of Manitoba's population, Winnipeg is located on the eastern edge of the Ca-nadian Prairies, at the confluence of the Red and Assiniboine rivers. The Disraeli is one of the most important bridges of Winnipeg. It provides a vital link between the downtown and the north-eastern portion of the city. More than 40000 vehicles cross the bridge every day. The Disraeli Bridge has served Winnipeg for 50 years. But the complex of roadways and bridges is aging. Therefore, in 2008, the City Council has authorized its rehabilitation.
The new project foresees the replacement of the Disraeli Bridge over the Red River. The new bridge will offer 4 lanes to the vehicle traffic with a sidewalk as well as a separate, lower span dedicated to bikes and pedestrians. The work for the bridge foundations have been awarded to Subterranean Manitoba Ltd. The site geology is characterized by the presence of open water for the first 3,5 m, fol-lowed by alluvial silt and clay for approximately 5 m, then silt and glacial till including large boulders, gravel and sandy layers.
According to severe soil conditions and the eventual necessity to work at a large drilling radius (from a floating barge for example), the powerful crane attached hydraulic rig SA-40 in Kelly configuration for cased piles, has been were to carry out the large diameter bridge piles.