One person was killed after a van and cement truck collided on 27th Street just north of Rawson Avenue.
The accident happened just after 10 a.m. Thursday at the driveway of Menard's. Police were blocking northbound 27th Street at Rawson, although southbound lanes remained open.
Initial police scanner reports indicated that extrication was needed and that an off-duty Milwaukee firefighter was working to revive a person.
The Wisconsin State Patrol has been brought in for an accident reconstruction.