Here’s another video showing water from the Sag River flowing over the Dalton.
And this one shows how the splashing of water has created ice ridges on either side of a flowing area. Trucks drive over the water and it sprays up and freezes on either side, so now there is a huge dip in the road. The bottom of the dip is the actual road. Some people were saying the road has washed out but Jack says no, it’s ice ridges building up and making it looking like a portion of the road has washed out.
(Don’t forget, YouTube automatically picks a low resolution so if you want a clearer picture click on the lower right hand side icon called “settings” and pick a higher number.)