Air Quality - Road Maintenance. Unlike several of the other issues, which are one-time expenses, this issue involves a continuing expense. The paved roads will require a far greater amount and a different kind of maintenance than the current dirt roads require. Although there are many tourist vehicles on the roads, especially during the summer, the mining trucks tear up the roads much more than the cars driven by tourists. Most road damage occurs in the winter because the weather conditions make the roads more vulnerable to wear and tear. In the winter, there are far fewer tourists than in the summer, but the mining trucks continue to damage the roads