In a tweet, Michigan's Department of Transportation urged residents to check the state's "Mi Drive" page before going out to the streets, since many major state roads have been affected by flooding.
On Wednesday, parts of the city of Midland and other areas were virtual lakes, and it may get worse.
Last night, Gov. Gretchen Whitmer said that downtown in Midland, a city of about 41,000 people downstream of the dams, could eventually be "under approximately 9 feet of water."
Midland County Road Commission said that every bridge crossing the Tittabawassee River is closed. The river is forecast to crest to 38 feet at 8 p.m. ET today.
The commission urged residents to not "attempt to use roadways that are underwater."