Your TTC commute may soon feature a soaring flight through Toronto's lush Don Valley, as work progresses on an enormous new subway bridge that will eventually carry the forthcoming Ontario Line high above the valley floor. Two major bridges spanning the Don River and Don Valley Parkway will stand out among the Ontario Line's elevated crossings, including the Don Valley Crossing bridge, which will stand as the first such high-level valley crossing built in roughly a century. In addition to joining the Leaside Bridge in the history books, the new crossing will also become a prominent foreground feature in the iconic skyline view enjoyed from the Leaside Bridge. These tasks were evident when blogTO visited the nearby Leaside Bridge to capture views of construction this past May. The Ontario Line is set to enter service in 2031.