Please provide highway only option

As I am doing a road trip across the US in early December and there have been heavy winter storms, I am finding it very frustrating that ABRP is routing me across lots of tiny state highways that are very hard to drive on with blowing snow and ice.

There seems to be no option to stay on main interstates. It provides suggestions like you can save an hour by going this way, but it doesn't tell you that it's zigzagging across small county roads and state highways (sometimes even with unpaved sections)and that might be fine on a warm summer day, but not at night in the winter time.