16th Avenue Watermain Reconstruction

The York Region Official Plan has identified substantial population growth in the Region with comparable growth in employment by 2021. Most of this growth was planned around the existing urban centres of Aurora, Newmarket, Vaughan, Richmond Hill, and Markham. To support this development, increased capacity in the York Durham Sewage System (YDSS) is required. The 16th Avenue Trunk Sewer Phase II is a key phase of construction to complete the paralleling of the YDSS through the Town of Markham by connecting to the existing Highway 404 Trunk Sewer located just east of Woodbine Avenue. The McNally/Aecon Joint Venture (JV) was the successful bidder for the 16th Avenue Trunk Sewer System Tunnel. The project also included the Reconstruction of the 16th Avenue Watermain which was relocated to accomodate constructionof the Sewer. Robert B. Somerville Co. Limited was subcontracted to construct 1,276 meters of 750 mm diamtera HDPE Watermain by Directional Drilling, 17 m of 600mm Diameter CPP Watermain by Open Cut, supply and installation of a Valve Chamber and an Air Relief Chamber including the associated Mechanical fit out, testing, commissioning and restoration of the project site. The project site was between Warden Avenue and Kennedy Road.