Caption: CN GP40-2W 9665 and SD50AF 5502 handle train #452, coming off the CN Newmarket Sub southbound and heading westbound on the York Sub at Snider, about to duck under Keele Street and enter CN's MacMillan Yard.

The CN York Sub from Vaughan to Pickering (and Halton Sub from Vaughan to Bramalea) was built in the early-mid 60's as part of the "Toronto bypass" project to divert mainline freight traffic out of downtown Toronto and the surrounding urban areas with a new rail line built to the north, running to a new larger and more modern freight classification yard (CN Toronto Yard, later renamed MacMillan Yard) in the Concord-Maple area of what is now the City of Vaughan. Since the north-west running Newmarket Sub had already existed here for decades (originally built by the Northern Railway of Canada in the 1850's), an interlocking diamond was required for the new York Sub to cross it, and the location named "Snider" (Snider was a long-established family name in the area, and they owned farms and mills in years past). Today, the Snider interlocking diamond shown in the background has been replaced with a large flyover in order to handle more frequent Barrie line GO train service.

Karl Bury photo, Dan Dell'Unto collection.