City Hall 519 Blackhawk Blvd # 2 South Beloit, IL 61080 Phone : (815) 389-3475 Business Category Highway & street construction Road Maintenance South Beloit City Public Works 100 Perry Ave South Beloit, IL 61080 Phone : (815) 389-3475 Business Category Highway & street construction Road Maintenance South Beloit City Of--dept Of Public Works 519 Blackhawk Blvd South Beloit, IL 61080 Phone : (815) 389-3475 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools