Stage One of the project will require significant closures to both the recreation field at Mill Creek School (Worksite#1), as well as the greenspace in Tubby Bateman Park (Worksite #2). The alignment of the trunk was selected in order to connect to existing combined trunks along 80 Avenue and 88 Avenue, as well as reduce the risk of impacting MillCreek Ravine.
During Stage One of the project, crews will construct a 30 metre deep shaft s for the tunnel boring machine (TBM), which will be used for the construction of the new tunnel. Two shafts will be constructed for the tunnel boring machine: an entry shaft at Mill Creek School, and a retrieval shaft in Tubby Bateman Park.
Construction of the entry and retrieval shaft is anticipated to take eight months to complete. Once the shaft s havebeen completed, tunneling will begin. The majority of the activity will take place at the entry shaft; the retrieval shaft site will be inactive for approximately one month after the retrieval shaft has been completed.