布羅爾－單福線
The University line opened nine years later, continuing from Union, back north under University Avenue, to St. George station. It was intentionally designed to serve much the same area as the Yonge line, in order to increase capacity in anticipation of the planned east-west line. Three years after the University line opened, the original Bloor–Danforth line was built, going under Bloor Street and Danforth Ave. from Keele in the west, to Woodbine in the east. Within two years, the Bloor–Danforth line had been extended in both directions, to Islington in the west and Warden in the east.