A 34-year-old Carter Lake, Iowa, motorcyclist suffered critical injuries late Wednesday in a crash in Council Bluffs.
The Council Bluffs Department said Chad Boehmer crashed just before midnight at Interstate 29 and Avenue G.
He was taken in critical condition to Creighton University Medical Center in Omaha. Later, he was listed in serious condition.
No other vehicles were involved in the crash and no other injuries were reported, authorities said.
Bluffs police said Boehmer was found unconscious near the motorcycle in a depression between the off- and on-ramps from Avenue G at I-29 South.
The crash remains under investigation by the Bluffs police department.