Toronto's transit network is undergoing a generational transformation, with the forthcoming Ontario Line subway set to become the crown jewel of the city's rapid transit system when it opens in the 2030s.The 15.6-kilometre, 15-station subway route between Exhibition Place and the shuttered Ontario Science Centre at Don Mills and Eglinton will introduce a pair of impressive new bridges spanning the Don River — both well under construction at different points along the line.Motorists on Toronto's Don Valley Parkway (DVP) have undoubtedly noticed construction on both of these bridges as work ramps up. The Lower Don Bridge may be the smaller of these two crossings, but it is without a doubt the flashier of the pair, thanks to its arch-supported design that will eventually span the Don River and DVP. First announced in 2021, construction on the 120-metre-long bridge kicked off in 2024 before things really ramped up at the start of this year. Sections of the new subway...