Now a new and perhaps even more vexing concern has emerged: Highway sinkholes stemming from long-abandoned mines. Three sinkholes have opened up along I-80 in Wharton since late December.

The third sinkhole since December has opened up on Interstate 80 in north New Jersey, adding even more closures and headaches to the region. The 15-by-15-foot sinkhole opened up just after 5 p.m ...

Portions of Interstate 80 in Morris County have been closed for four months due to sinkholes. Timothy Bechtel, a senior professor of geosciences at Franklin & Marshall College, said precipitation ...