Martin County, Florida (located in South-East Florida), operates a system of county roads that serve all portions of the county.

The Martin County Roadway Design & Construction Division is responsible for maintaining all of the Martin County roads.

[1] The numbers and routes of all Florida highways are assigned by the Florida Department of Transportation (FDOT), while county road numbers are assigned by the counties, with guidance from FDOT.

[2] North-south routes are generally assigned odd numbers, while east-west routes are generally assigned even numbers.

[3]