Yet another sinkhole this time on I-287 in Morris County.

It opened Friday evening on the left shoulder of the northbound lanes near exit 41 b.

Crews worked around the clock over the weekend to get two lanes open for this morning's commute.

State transportation officials say the hole was caused by a collapsed drainage pipe and isn't connected to the abandoned mine shafts that have opened along Route 80, effectively crippling traffic there.

The shoulder will remain closed on 287 while crews make more permanent repairs, though it's unclear how long that will take.

Meanwhile, on Saturday, U.S. Transportation Secretary Sean Duffy toured the site of the sinkhole on I-80 in Warren with Governor Murphy and Congressman Tom Kean, where three sinkholes have opened along the busy highway just since December.

They're all located in about the same area and both sides of the interstate.

Governor Murphy says the goal is to reopen the westbound lanes within the week, but work on the eastbound side will continue for another roughly two months.

New Jersey Transit today started offering a 50% discount on roundtrip travel for people affected by the ongoing work.