Ontarioā€™s Premier Doug Ford wants to dig Canadaā€™s largest city out of its traffic woes.

The pitch is to build an expressway for vehicles, and possibly transit too, under Canadaā€™s busiest throughfare: Highway 401.

Standing roadside speaking to reporters, Ford vowed to make his pitch a reality. ā€œIā€™ll tell you one thing, weā€™re getting this tunnel built,ā€ proclaimed Ontarioā€™s Premier as traffic crawled along behind him.

Opposition critics at the provincial legislature are already calling Fordā€™s plan political pageantry, with Ontario Liberal Leader, Bonnie Crombie, proclaiming, ā€œI really think this is a pipe dream of an idea.ā€

The tunnel, as it has been proposed, would run from the west end of the Greater Toronto Area in Mississauga to Scarborough in the east -- a distance of about 55 kilometres.

By comparison, the longest tunnel road in the world is in Norway - at 24.5 kilometers - and its only two lanes.

If Ford truly intends to see his tunnel vision through, the ā€œbig digā€ in Boston, Mass. may give a glimpse into what Ontario can expect.

Boston began planning to replace its deteriorating six-lane elevated Central Artery (I-93) freeway in 1982. Initially, it was scheduled to be completed in 1998 at an estimated cost of $2.8 billion. However, the project wasnā€™t completed until December 2007 at a cost of over $14.8 billion.

Highway 401 tunnel: Another 'Big Dig?'

While Torontoā€™s Tunnel would dwarf Boston's ā€œbig dig,ā€ the Research Director of the Urban Analytics Institute at the Toronto Metropolitan University, Murtaza Haider, believes that shouldnā€™t stop the Greater Toronto Area from completing a feasibility study.

ā€œThe 401 was built as a bypass. Itā€™s beyond capacity. You have 450-thousand vehicles pass through its busiest section on a given day,ā€ noted Haider.

Though Ontarioā€™s plan for Toronto and the Bostonā€™s infrastructure project would be far from identical. Haider points out that a large portion of Bostonā€™s tunneling was done under homes. While digging underneath an active highway like the 401 presents engineering challenges, Haider believes a Toronto tunnel could be a smoother process, ā€œYou have no one living on top, so thereā€™s a good chance this could be done in an efficient engineering way.ā€

The big unknown, says Haider, is the cost. ā€œIt could be as much as $500 million a kilometre, and if you're building 60 kilometres, that could be in the range of 30-billion or higher. The question is, ā€˜do we have the money? Does the value of it necessitate the use of these public funds?ā€™ā€

With a provincial election in Ontario on the horizon, University of Toronto planning professor Matti Siemiatycki doesnā€™t believe the plan will achieve the Ford governmentā€™s stated goal of reducing traffic.

Speaking to Ā鶹“«Ć½, Siemiatycki, shared his belief that ā€œthe premier is laser focused on suburban commuters,ā€ going on to add, ā€œthatā€™s where you win elections in the province of Ontario, in the commuter belts and (Ford) understands their pain. There is a huge congestion problem so heā€™s been targeting them with all these announcements and investments. But this proposal in particular wonā€™t solve the problem. It will be costly, and just make congestion worse.ā€

Haider sees it differently. With Ontarioā€™s population skyrocketing, he agrees that a new or expanded highway wonā€™t reduce traffic, what it will do is allow for more commuter capacity for a growing region. He says that any plan for a Toronto tunnel must include a dedicated rail and bus corridor underground.

After Boston completed its project, the city says it experienced a 62 per cent reduction in vehicle hours traveling on the I-93 and the airport tunnels.

It may take years before we know if Fordā€™s proposal is indeed a ā€œpipe dreamā€ intended to capture the imagination of voters, or a real plan to move Toronto into the future.