Auto Road creator (v3.0)VIP 

An easy,time-saver tool to create
( 3d low poly roads) for your game.

All you have to do is open the map creator tool, draw on the grid to create a map of roads to use in your game.

In under two minutes you can have a complex road network(parallel and perpendicular only)
you can create flat map or terrain map
just add terrain to the tool and the roads will deform to the terrain

Original_Link: https://assetstore.unity.com/packages/tools/modeling/auto-road-creator-v3-0-96374

Download Links:

Asset Version (v3.0)