The City of Richland Hills is responsible for city street maintenance including: patching potholes, street lights, and street signs.
For more information regarding city streets:
Public Works 
6700 Rena Drive
Richland Hills, TX 76118
(817) 616-3830

To report power outages, call (888)313-4747. In case of an emergency, please dial 911. Remember to never touch downed powerlines.

Streetlight outage reporting web site: http://www.oncor.com