List of east–west roads in Toronto

The Frederick G. Gardiner Expressway, known locally as "the Gardiner", is an expressway connecting downtown with the western suburbs. Running close to the shore of Lake Ontario, it now extends from the junction of Highway 427 and the Queen Elizabeth Way (QEW) in the west to the foot of the Don Valley Parkway in the east, just past the mouth of the Don River. East of Dufferin Street, the roadway is elevated, running above Lake Shore Boulevard east of Bathurst Street, making this stretch of Gardiner Expressway unofficially the longest bridge in Ontario. Elevated sections east of the Don River were demolished and integrated into Lake Shore Boulevard.

The highway is named for the first chair of the Metropolitan Toronto Council, Frederick G. Gardiner; the council was dissolved in 1998. The six-lane section east of the Humber River was built in segments from 1955 until 1964 by the Metropolitan Toronto government with provincial highway funds. The ten-lane section west of the Humber River was formerly part of the QEW and is now wholly owned and operated by the municipal government of Toronto.

When the Gardiner was built, it passed through industrial lands, now mostly converted to residential lands. Extensive repairs became necessary in the early 1990s, and since then, the Gardiner has been the subject of several proposals to demolish it or move it underground as part of downtown waterfront revitalization efforts. One elevated section east of the Don River was demolished in 2001, and a study is underway to demolish that part of the elevated section east of Jarvis Street to the Don River. Provided by Wikipedia