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.

Officials estimated that the depression stretched  40 feet wide and 40 feet deep. As of Thursday, all lanes of I-80 eastbound were closed, forcing travelers to find alternate routes, according to the New Jersey Department of Transportation.

A sinkhole on I-80 in New Jersey is causing delays and detours Thursday as crews work to plan repairs. The sinkhole opened on Interstate 80 eastbound in Wharton in Morris County. The state Department of Transportation is warning motorists to expect delays through the area and to consider alternate routes.