Curvy and downhill road

[Modron]

This is one way to make a curved road:

Tip: Make a road along curved geometry

Assumed knowledge: Basic materials, modifiers, surface snapping, a terrain model of some sort. 1)…Start with a square grid, somewhat dense. Give it the road material you want it to have. 2)…Give your grid an array modifier to make it longer, choosing the join option, then apply it. 3)…Set your origin to your geometry. 4)…Add a bezier curve, subdivide it a couple of times, then position it as you want your road to go, and use surface snapping to snap it to your terrain surface, then disable …