This article from 2013 links to a useful interactive map that shows traffic cameras and routes of salt trucks:

Website Will Let You Track Plows, Salt Trucks In Wayne County
We have some of the trucks loaded with cameras, so they can do a virtual drive along. They can see where the trucks have been, what routes have been cleared. So it’s an interactive site for the public to use. And we advise them to look at that site if they have an opportunity.
I couldn't find a working video truck feed.