Steve X
Senior Member
I don't see why they need to modify it. The existing 410 should be renumber as highway 10 and serve as the connector between 410 and current highway 10. It needs to maintain high speed traffic flow for highway 10 northbound traffic. It can't be transformed to a local road since the new 410 doesn't appear to join up with highway 10. Now I wonder if they will design the highway to allow extending the 410 to Orangeville in the future. Clearly adding a parclo on highway 10/GTA west doesn't help with a future twinning or upgrade to RIRO.That confirms it then. Highway 410 to be realigned to N-S alignment after Mayfield and will join GTA West. I wonder what will happen to the existing 410 spur to Highway 10? Perhaps decommissioning and removal of the Hurontario interchange.
The same applies to the 427. They look like T interchanges similar to the 407/412 and 407/418 in the preferred route.