In Texas, Farm to Market (FM) and Ranch to Market (RM) roads are owned and maintained by the Texas Department of Transportation (TxDOT). This includes Texas State Highways.
Contact:
Texas Department of Transportation
aka TXDOT.GOV
Report an Issue by CLICKING picture below:

Marlin TXDOT Office
254-883-3462
State vs. County Roads: Commissioners only handle county roads. If the road is a U.S. highway or a state road (like TX-6 or US-77 in the Marlin area), you will need to report the issue to the Texas Department of Transportation.
In Texas, city streets, within City limits are owned and maintained by the City.