Ripples and waves are common throughout the region. Both the substrates and surface layers are insufficient for the loads and temperatures in the area. Take a look at Queen Street south of Market. It was completely repaved as part of a "streetscaping" project only 3 or 4 years ago. Within 6 months, there were potholes, "ripples", and "waves". PennDOT = PennyWise/PoundFoolish. On the other hand, the reengineering of Route 30 north of Lancaster, which must be 10 years old by now, is still in outstanding condition.