The recent sinkholes on I-80 were caused by long-abandoned mines. See the map showing hundreds of closed New Jersey mines.

What causes sinkholes? Traffic nightmares worsen as new sinkhole opened on Rt 80 - shutting down traffic in both directions.

The Route 80 sinkholes are crushing the Wharton business district as customers avoid the detoured highway traffic now flooding the downtown streets.

NewsCopter 7 was over the scene of the new sinkhole that opened up in the westbound lanes of I-80 near Exit 34.

As crews worked to repair a sinkhole in the highway's eastbound lane, a new 15-by-15-foot hole appeared along the median near ...