Since the V8.3 patch I have noticed that many of my Dirt Roads go uncompleted for years. I tried increasing number of builders, getting above recommended laborers, deactivating all the other construction jobs, then I going back and making sure all the builders for each deactivated job was zero, I tried deleting and re-laying roads, and finally I prioritized each individual square for the road, and still no new roads.
Also on another note, don’t you think upgrading to paved roads should increase desirability?