Caption: CN GP40-2L(W) units 9412 and 9550, sandwiched by GP38-2 5513, lead an eastbound freight over the long bridge crossing the Humber River at CN "Humber", Mile 4.4 of the Halton Sub. This evening view is looking south-west from a point along the Humber River valley, with apartment buildings along the north end of Kipling Avenue near Steeles in Toronto visible in the distance. Today, the concrete freeway known as the Highway 407 ETR would run about where the photographer is standing.

This portion of the Halton Sub ran just north of the Toronto city limits, through the southern part of Vaughan. The line was constructed as part of the Toronto bypass project of the early-mid 60's to divert freight traffic out of the city and to a new, large and modern Toronto Yard (later renamed MacMillan Yard) to the north, which was still largely farmland. Much of the line between the existing Brampton Sub at Halwest and the new yard was built as double-track, except for this single-track trestle crossing high over the Humber River (which remains single-track to this day, with equilateral turnouts at each end). On both sides of the Humber River bridge, the line was constructed on long built-up embankments due to the land elevation, visible under construction in 1963 here and completed in 1964 here.

Allen W. Clum photo, Dan Dell'Unto collection slide.