The CBC has a good piece on the arguments around the Eglinton Crosstown West Extension that will run through the Eglinton Flats:
Tunnelling for the extension started in early April and later that month, Metrolinx invited shortlisted builders to submit proposals to design and construct the elevated section. But Brissenden’s group and the Mount Dennis Community Association are calling on the agency to change course before it’s too late. And they’re not alone: the City of Toronto asked the provincial transit agency at least twice in recent months to consider bringing the elevated section underground.
But Metrolinx says the current design is the most cost-effective option, and can bring the most number of riders onboard without the risks that come with tunneling underneath the Humber River.
Though the piece is balanced, it doesn’t mention the third possiblility: that the line could be neither buried nor destructive—and could instead run down the middle of Eglinton, as first planned.