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Sewer relocation over rail right-of-way poses construction challenges

The City of Edmonton was required to relocate over 300 metres of existing 250 mm sanitary sewer that crosses a CN Rail right-of-way to allow installation of new rail bridge abutment foundations. The new abutments were required to extend the span of two existing rail bridges over Highway 16 to make room for a new on-ramp to be constructed under the Province of Alberta’s Northeast Anthony Henday Drive (NEAHD). The NEAHD is part of a major ring road around the city to provide much-needed capacity to Northern Alberta’s highway network; the Gateway to the North. Much of the Anthony Henday Drive has been completed, with the exception of the northeast stretch.