Toronto mayoral candidate Rocco Rossi’s latest promise is to extend the Allen Expressway underground all the way to the Gardiner Expressway, complete with a subterranean bike lane. Rossi announced Monday that, if elected on Oct. 25, his four-year term would include the start of construction on an eight-kilometre “Toronto Tunnel” toll road starting where the Allen ends at Eglinton Ave. West.

Professor Eric Miller, a transportation planner and director of the University of Toronto’s Cities Centre, called the idea “a complete non-starter.” Gridlock on the Gardiner would back up traffic in the tunnel, creating a new bottleneck without adding capacity to the road system, he said.

“It’s not going to move people any faster,” Professor Miller said. “The only way to seriously reduce congestion on Toronto streets is to get more people on subways, buses and streetcars.”

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