Caption: On Wednesday 1980-09-24 at 1554 MDT, a CN northward Athabasca Turn with a trio of GMD-1s 1009 + 1007 + 1008 is crossing the Tawatinaw River bridge at mileage 92.8 of the Athabasca sub. and about to cross highway 55 and enter downtown Athabasca on the south bank of the river of the same name. This was the northernmost reach of the Canadian Northern Railway system.

Since 1947, Athabasca sub. trains from Edmonton ran on 20.2 miles of Northern Alberta Railways to reach a junction at Morinville, in preference to the now abandoned original CNoR route northward from Trelle Jct. near St. Albert for 12.1 miles to a diamond crossing of NAR at Morinville. CNoR reached Morinville first, in October 1906, and NAR predecessor Edmonton, Dunvegan & British Columbia arrived in December 1912, so the diamond and interlocking were ED&BC then NAR responsibility.