Doncaster to Snider

From the junction and flat crossing with the north-south Bala sub., with connectors in the southwest and northwest quadrants, at Doncaster (MP 18.4), whose station name is immediately west of the crossing, the single-track, CTC, line heads west, past a bridge over a road, across the river, past a bridge over a road intersection, a bridge over a road, detectors at "York 2", a line used to head away on the south side, a bridge over a road, a signal bridge at Dundas Street, a bridge over Dundas Street, and a bridge over a road, to the flat crossing and junction with the north-south Newmarket sub. at Snider (MP 23.6), where there are connectors in the northwest and southwest quadrants and crossovers to the west of the connectors.