The McKeesport Connecting Railroad, located along the Monongahela River in McKeesport, PA, is a terminal switching railroad serving the Camp-Hill pipe mill.
Camp-Hill is an outside processor for United States Steel LLC that rolls skelp from USS-Irvin and Gary Works into pipe used by the water and gas transmission pipeline industry.

The MKC provides daily service and maintains direct interchanges with the URR and CSXT, and interchanges with the BLE, WLE and NS through an intermediate switch provided by the URR.