A tanker truck spill involving cattle entrails shut down northbound lanes on a Milwaukee freeway for six hours on Friday, according to the Milwaukee County Sheriff’s Office. The incident occurred just after 3 p.m. on I-43/94 near Oklahoma Avenue, snarling afternoon traffic until cleanup crews cleared the roadway shortly before 9 p.m.
Incident Details on I-43/94
According to investigators from the Milwaukee County Sheriff’s Office, the driver of the tanker truck braked suddenly to avoid another vehicle traveling ahead in the northbound lanes. That sudden maneuver caused a portion of the vehicle’s cargo—cattle entrails—to spill directly onto the interstate near Oklahoma Avenue.
Friday. Transportation and cleanup crews worked through the late afternoon and evening hours to sanitize the freeway, keeping at least one northbound lane closed until just before 9 p.m. to accommodate the intensive sanitation effort.
Traffic Impact and Enforcement Status
Local coverage from WISN 12 confirmed that traffic was restricted while crews removed the organic debris from the pavement.

A spokesperson for the Milwaukee County Sheriff’s Office stated that investigators were not aware of any citations being issued in connection with the sudden braking maneuver or the resulting cargo spill.
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