Speed River Crossing for Arthur Street Sanitary Sewer Class Environmental Assessment

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In February 2013, the City started the Speed River Crossing for Arthur Street Sanitary Sewer Class Environmental Assessment to explore alternatives servicing alignments for the existing Speed River crossings.

As part of the City’s sanitary sewer drainage network, a gravity sewer and a siphon cross the Speed River in the area north of Neeve Street. They connect the Arthur Street trunk sanitary sewer to the Speed River trunk sanitary sewer on Wellington Street. East of the river the sewer passes through private property. The two sewers which service a drainage area of approximately 965 hectares in the northeast part of the City are at the end of their service life and require replacement. The existing Speed River crossings pose several risks due to their age and location within the river. Additionally, the ability for this portion of the Arthur Trunk Sewer to convey peak flows under existing and future growth scenarios is limited given its current condition.

There is an opportunity to provide a new route and alignment for the Arthur Street Trunk Sewer downstream of Macdonell Street. The process of selecting a new route will consider environmental, social/cultural and economic impacts associated with the construction of a new sanitary trunk sewer. The new trunk sewer will also be able to convey peak flows under existing and future growth scenarios.