The interstate was closed for about three hours earlier Sunday, after a pair of crashes late Saturday on I-75 and nearby U.S. 441, Highway Patrol Lt. Patrick Riordan said Monday. Troopers, the state Department of Transportation and the local sheriff's office reopened the road after determining that conditions were improving, he said.

I-75 reopened at 3:26 a.m. Thirty-three minutes later, callers began to report chain-reaction crashes in both the north and southbound lanes.

Scott has asked the state Department of Law Enforcement to investigate the circumstances behind the crashes.