The Crawford County Sheriff's Office says Walleser was driving to work when it happened. Members of the La Crosse County Dive Team assisted with the recovery.
In his 26 years of sheriff, McCullick said he has never seen anything like this.
The hole caused by the washout is estimated to be eight to ten feet deep.
Crawford County Sheriff Dale McCullick said another driver witnessed the washout and the accident, and alerted authorities. Transportation officials on the scene tell WXOW the bridge itself is structurally sound.
An Iowa resident died in a auto crash after his vehicle fell into a washed-out part of the road in Freeman Tuesday morning, the Crawford County Sheriff's Office said.
The Crawford County Highway Department began the process of repairing the road shortly after the Jeep was removed from the scene. When he got over the Blackhawk Bridge into Wisconsin he came to a washout and the vehicle fell into the Mississippi River. The victim's body was recovered in his vehicle around 8:30 a.m.
Deputy Marc Myhre (MEYE'-ruh) of the Crawford County (Wisconsin) Sheriff's Office said Tuesday that a section of the Wisconsin Highway 82 approach to Black Hawk Bridge has washed out in the high water.
The Mississippi River has experienced high river levels in recent days.
As a result, McCulloch said the highway is closed in both directions.
The person has not been identified.