Slick road conditions may have contributed Wednesday to a two-car accident that injured four people and shut down a portion of U.S. Highway 275 near Waterloo.
The southbound portion of the highway was expected to reopen about 7 p.m., said Chief Deputy Marty Bilek of the Douglas County Sheriff's Office.
One adult was taken to Creighton University Medical Center in critical condition, Bilek said. Three other adults were seriously injured and also taken to the hospital.
One of the vehicles had an infant inside who was not hurt.
Bilek said a northbound vehicle on Highway 275 near West Maple Road crossed the center line about 5 p.m. and collided with another vehicle.
He said icy conditions had developed on the bridge and that sleet was falling at the time.
The Omaha Fire Department sent three medic units to assist Waterloo rescue workers.
Bilek said initial reports that a person was pinned inside a vehicle were wrong.