Crews continue their work Saturday on the sinkhole that has closed a section of Interstate 80 eastbound in Wharton, NJ.

A crumbling mineshaft caused the 40-foot-by-40-foot sinkhole that closed part of the highway, state transportation officials said.

A sinkhole on a New Jersey interstate that's closed eastbound traffic for over 24 hours was caused by a collapse of abandoned mineshaft, officials said.

Morris County is home to hundreds of abandoned mines, with several located near the sinkhole's location off Interstate 80 in Wharton.

A sinkhole that opened up along Interstate 80 in northern New Jersey has forced authorities to close the eastbound lanes of the heavily traveled highway.

A sinkhole on I-80 in Wharton, New Jersey created a traffic nightmare. CBS News New York's Christine Sloan reports.