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pattern on your driveway. That is, the rain is flowing off the crown of your roadway, following the camber of the travel way down into the ditching at the sides to be carried off into the woods, or fields, or into culverts.
The vast amount of damage to driveways, especially gravel driveways, is caused by falling rain or melting snow that does not go where it should go. Water should go off your driveway, down, and away. Three or four inches of steady rain, drumming away on an improperly formed driveway, will create little trickles, then stream lets, with the water working away, hour after hour, forming ruts, washouts, holes, pools of water, and carrying off portions of the surface course. If you don’t have proper drainage, you will eventually be in big trouble.
“Culvert” was mentioned above. A culvert is a passageway under your driveway to carry off large amounts of Water from a high side to a lower side. Many are in the form of corrugated pipes running under the end of a driveway where the driveway meets a VDOT. highway. But they should be anywhere along the driveway where a large amount of water encounters your roadway: brooks, streams, or the sudden water runoffs from rainstorms.
Culverts may be in the form of, say, 24” diameter metal corrugated pipes, or much larger diameter pipes or even concrete structures if there is large real or potential water flow. Generally, when an open span under a driveway exceeds twenty feet, it’s called a “bridge.”
Are there any other terms to
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