Yes, they are public record. Visit the city of Milwaukee's website at www.milwaukee.gov and go into the city's site not the county's and then click on get property information on the left hand side. I have included the link below hopefully it will work. Once to the page enter the property address and then go to the middle of the page and click on the details for Property Recording, Code Violations, Service Requests and Permits. Click on view under violations and anything with a "N" under final status is still open and needs to be completed.
Good luck and let me know if I can be of any further assistance.