MDOT repairs I-75 sinkhole in Grand Blanc Township, northbound lanes reopen

GRAND BLANC TOWNSHIP (WJRT) (1/11/2020) – The northbound lanes of I-75 reopened in Grand Blanc Township less than two days after a culvert washout opened a sinkhole under the freeway.

All northbound lanes closed Thursday night just north of the I-475 interchange after high water in a retention pond draining through a culvert completely washed out the structure.

The pavement remained intact over the washout with no soil underneath. The shoulder on both sides also washed away.