The line begins in Rankin at the Pittsburgh Subdivision, almost directly under the Rankin Bridge, and runs along the east (right) shore of the Monongahela River. It meets the AVR's W&P Subdivision near the Glenwood Bridge in Glenwood, and continues near the river to near Greenfield. There the line turns north away from the river, and continues into Junction Hollow and through the Schenley Tunnel which goes under Oakland to Bloomfield. There it crosses and connects with the Norfolk Southern Railway's Pittsburgh Line; CSX ownership ends, and AVR ownership begins, here. The line continues northwest, junctioning with the AVR's main line and then immediately crossing the Allegheny River on the 33rd Street Railroad Bridge. It turns northeast along the west (right) bank of the river to Etna, turn