This is the only station south of Bloor Street on the original line, with the only other one at Kipling not being built until 1980, as the new westerly terminus. Sherbourne is also uniquely deep underground, requiring a 2,250 feet (690 m) long section of track to be bored west to Yonge station, rather than the shallow cut and cover method used to construct most of the line.
East of the station, the line crosses back under Bloor Street to the north side. It emerges from the tunnel to cross the Rosedale Ravine on a curving covered concrete bridge,and then returns underground just before Castle Frank station. The adjacent bridge that carries Bloor Street across the ravine, although built with provision for a lower deck as part of the Prince Edward Viaduct project, is at such an angle to the subway alignment that it could not be conveniently used. A conventional bridge was planned for the subway line, with a view of the ravine, but local objections forced the Toronto Transit Commission to enclose it in a concrete shell for noise abatement.
Changed the location, container and difficulty (Oct 1, 2017 and Sept 2, 2018). Not suitable for TB or tradeables. Bring your own pen.