system
Given the following post, respond as if you're commenting on Reddit:
human
Is this a dumb idea to fix roads in wintery places?

I live in WI.  Our roads get decimated every winter largely because the frost penetrates deep in the ground causing frost heaves, cracks and holes.  What if we spray foamed the first layer of road before adding the rebar, rock and pavement.  Would that stop the frost penetration and lengthen the life of muh roads?
gpt
It's not so much the water penetrating the pavement, but the water in the ground under the pavement freezing and causing the road to "heave" and bend more than intended, and crack. once a crack forms, water seeps in, freezes, makes it bigger, etc...

a more flexible road surface is the answer... old "sand & tar" roads are great at pothole resistance... they're just not terribly smooth.