County_Road_609_(Martin_County,_Florida)
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]