Northbound I-75 is closed at S. Huron Drive in South Rockwood due to a crash involving a flatbed semi.

According to Michigan State Police, troopers are working that crash and Monroe County sheriff’s deputies are working another crash along I-75 Downriver.

MSP says northbound I-75 was closed at mile marker 26, causing major backups.

Sheriff’s deputies are working a crash at southbound I-75 and I-275 and have to close I-275 to land the helicopter for injuries sustained in the crash.

Stay with 7 News Detroit for updates on this story.