The massive repair project that’s been under way on I-75 south of Detroit is about to make a change that’s sure to inconvenience countless motorists.

On Tuesday night at Taylor City Hall, scores of motorists filed through a two-hour open house held by MDOT to explain the impending closures.

MDOT has retimed the traffic signals on major north-south roads in the area — including Fort Street, Allen Road, Pelham Road and Telegraph Road, said Matt Hickman, MDOT traffic operations engineer for the region.

Sometime in the next couple of weeks, the Michigan Department of Transportation will close off the busy ramp where motorists enter southbound I-75 from Allen Road in Southgate, said MDOT spokeswoman Diane Cross.

Drivers will be asked to find their way, over various possible routes, to enter the southbound freeway via Telegraph Road, Cross said.

“For a couple of weeks, it’ll be pretty tough as people get used to this,” she said.