Much of the Bloor-Danforth subway was built one or two lots north Bloor Street and Danforth Avenue, and required the purchase and demolition of many properties.
At the time of its construction, Greenwood yard was the largest on the TTC system. It was designed to meet the demand of the new subway cars required for the Bloor-Danforth-University Subway lines and to ease the overcrowding at Davisville Yard. The shops at the north east corner of the yard eliminated the need to truck subway car parts to the Hillcrest complex for work.
The Bloor-Danforth-University project required additional subway trains. TTC staff, working with the transit supply industry, designed new longer cars built of aluminum that set new standards for subway car design worldwide.