Its construction was relatively easy since, like the Main Street Tunnel, it was being built at the same time as the channel above it and a simple cut and cover method could be used.

As well, a solid earth plug had to be put into the Welland Recreational Waterway (the old alignment of the canal), cutting it in two (satellite photo).

[1] Rain and snow falling on the approaches to the tunnel, as well as ground water flow, necessitate the operation of a pumping system to prevent flooding.

[2] In February 1985, excessive runoff during a winter thaw caused flooding in the tunnel which closed the route to both rail and vehicular traffic.

[3] In late March, 2010, a routine inspection of the concrete pipes through which the water is pumped revealed erosion which threatened to cause a sinkhole within the road.