Massive Sinkhole Repaired, I-80 Reopens In Morris County

MORRIS COUNTY, NJ — Days after a massive sinkhole caused the closure of Interstate 80 in Morris County, leading to traffic delays and detours, the roadway has officially reopened.

The 40-foot by 40-foot crater that opened on the shoulder of eastbound Route 80 in Morris County Thursday was caused by the collapse of an abandoned mine shaft, which split the earth and shut down several lanes of the busy highway, according to the state Department of Transportation.

Officials reported no injuries from the sinkhole, but it caused significant traffic congestion, with drivers urged to take detours over the weekend as crews worked to fill the hole.

NJDOT and contractor crews worked around the clock, starting Thursday and continuing through the holiday weekend and inclement weather, to complete the extensive repairs as quickly and safely as possible, officials said.

“I want to commend the outstanding efforts of the NJDOT and contractor crews that worked tirelessly to get Interstate 80 reopened quickly and safely for the motoring public,” Commissioner Fran O’Connor said. “Given the extensive nature of the damage, it is truly remarkable the amount of work that was done in such a short amount of time.”

Repairs included stabilizing the sinkhole and reconstructing the roadway. Crews installed a stone base, wire mesh, concrete layer, and several layers of asphalt. The slope was also rebuilt, and guide rails were repaired.

The roadway fully reopened around 8 a.m. today. Motorists are encouraged to visit NJDOT's website, www.511nj.org, for construction updates and real-time travel info.