Transporting the millions of gallons of water, as well as equipment, sand, and other materials needed to hydraulically fracture a natural gas well requires quite a few truck trips, to put it mildly.
One well site could require up to 3,399 one-way truck trips [PDF], according to the New York Department of Environmental Conservation's 2011 draft environmental impact statement (dSGEIS) on hydrofracking.
All those trips by heavy trucks can quickly beat up and wear out roads if they're not built to handle it.