Originally Posted by dmuzika
Alberta Transportation announced some major improvements in Cochrane:
Admittedly I don't live in Cochrane, but I'm a little surprised about an interchange. I know the intersection needs upgrades, but I thought twinning and dual turn lanes would be enough. The topography would be similar to the John Laurie Blvd & Shaganappi Trail intersection. Any thoughts?
I don't live in Cochran, but I'm through the intersection a few times per year.
I am glad that AB Transportation is going straight to interchange rather than the natural progression. The progression from minor intersection to major dual turn intersection only makes sense when there is a major developer that can have road improvement levies assessed against the development (essentially developer pays for 1/2 the intersection improvements). In this instance the SE and SW corners are developed and the NE corner cannot be developed due to the escarpment. The NW corner could not take the entirety of road improvement levies and remain commercially viable compared to other locations.
The other nice opportunity for highway 1A is the closure of a lot of the intersections to downtown. Only Centre Ave and 4th Ave need to be intersections. the rest (2nd, 3rd, 4th) can be closed off to improve traffic flow. This will have a further consequence of making 1st and 2nd streets much more pedestrian friendly.
I also commend Ab transportation for their insistence on going directly to interchanges. This is a intersection of two major provincial highways and therefore interchange is warranted.