The highway crews in Yukon are on a never-ending cycle of repair. Each day, new potholes appear in the highway. I drive in to Whitehorse in the morning, and then in afternoon have to keep my eyes open for new holes that appear during the day.
There's a few spots where they fixed the frost heaves this spring, and those spots have sunk/risen again already. There are sections of highway that continuously sink. There are some places where they monitor the movement with cameras. Three years ago there was a complete rebuild of a stretch near our place, and it is falling apart already.
Tonight on my way home, I was following a 35 foot (or thereabouts) Class A towing a car trailer with a mid-sized SUV on it. The RV was moving at 70 mph. Yup, seventy! When it hit the frost heaves, the bouncing was spectacular. No brake lights, no slowing. Pedal to the metal. Count on that hitch breaking before reaching the Alaska border. I had to finally pass doing 85 mph, but I know where the dips and pavement breaks are and drive a little Honda Fit that doesn't get airborne on the heaves.