The Public Works Department is responsible for the maintenance and snow removal of over 3,000 miles of County-State Aid Highways (CSAH), County Roads, and Unorganized Township Roads.

Public Works is also responsible for the inspection and maintenance of over 600 state bridges over 10 feet in length, 300 bridges that are less than 10 feet in length, and over 40,000 traffic signs within St. Louis County.

There are 17 tool houses located within four Maintenance Districts throughout St. Louis County.  These buildings and the equipment housed there have an estimated value of one-half billion dollars.