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Southwest Rapid Transit Corridor Project - 2011

Dillon Consulting

Since the early 1970s the City of Winnipeg has contemplated a Rapid Transit System.
Of the many challenges posed in this multidisciplinary project, the greatest achievement was designing a two-lane tunnel structure to cross under the seven CN railway tracks that would have a minimal impact to CN rail traffic operations, work within stringent property constraints, and enable construction to be completed within two years. The resulting design is a 200m long cast-in-place concrete, structurally shored tunnel including 150m of retaining/wing walls, complicated by three phases of CN track relocation and two phases of tunnel construction. In order to complete the tunnel construction works within two years, CN’s railway tracks must be relocated in three separate phases and the tunnel itself will be constructed over two stages. Construction of the tunnel commenced in 2009 and is anticipated to be completed in November 2011.

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