innsertnamehere
Superstar
The cost per km of the recent contracts for 69 twinning sit around $10 million per km. That is a reasonable metric to go off of if you ask me. So 100km would cost about $1 billion.This document from 2005 puts the cost of upgrading Highway 69 at $6.5 million/km. Costs have no doubt risen since then. 4 laning the entire Highway 17 corridor across northern Ontario, even without interchanges, would get into 11-figure territory. That's a lot of money to spend on a project across a vast and mostly unpopulated wilderness, the kind of project that's almost unheard worldwide. Just because the Americans have cross-country expressways that doesn't mean that we need them too.
Selective widenings in key areas, 2+1 expansions, additional passing lanes, etc. are much better ways to improve highways across the north and more typical of highways in large remote regions.
twinning the ~2,000 km of highway 17 that is not twinned would therefor cost around $20 billion.
I think the most rational approach would be to drop about $2 billion on the highway to build various bypasses and twinning sections where they are needed most. Get the 417 to Petawawa, 17 through Sudbury and past Espanola, through North Bay, through Thunder Bay, around Sault Ste Marie, add a bunch of passing lanes all along the highway, and a few more smaller town bypasses. That alone would vastly improve travel times and safety.