I'd be curious to see what percentage of Danbury area residents work in places along the Harlem Line (IE, White Plains, etc) vs work in places along the current route (Stamford, etc). GCT travel times will be a draw at best, but if there's enough non-GCT movement to justify this, then there's your reason for being. As already mentioned, 84/684 interchange sucks, and 84 itself gets pretty rough at times.
Train322 wrote:With respect to tolls, I think increasing the gas tax makes more sense. Having a toll, one in a county to get revenue from trucks would be better than every six miles.A truck only toll is quite possible. The NY State Thruway has one in Spring Valley for commercial traffic only.