How Do You Stop a Gravel Driveway From Washing Out?
A gravel driveway washes out because water runs down it instead of off it. Cut off the uphill water, shape the drive so runoff sheds to the side, and give it somewhere to go.
How Do You Choose Culvert Pipe for a Driveway Crossing?
Match culvert pipe to four things: county requirements at the approach, how much cover it gets, what drives over it, and how the ends get protected. The install decides more than the material.