Going south out of Taylor Yard, there are two main tracks on the same ROW, the westernmost track can be considered the Bloomsburg branch, and the other track the CP line. Near Davis St. the ROW separates into two separate lines, with the Bloom being the more westerly ROW. Just to the south, the CP line crosses the Lackawanna river on the old CNJ bridge and follows the eastern/southern side of the river, with the Bloom on the opposite side of the river. You can trace this on Google Maps aerial view. The Bloom is still in use by RBMN from Taylor Yard to Coxton Yard, though not that heavily used. South of the Coxton junction, the Bloom continues over a bridge over the Susquehanna (still in great shape) but out of service and continues to Kingston (all out of service), where the tracks end. All is gone south of there until you get to Salem Township just north of the nuclear power plant, then tracks resume all the way to Northumberland (about 43.5 miles) and that section of the old Bloom is operated by the "North Shore" Railroad and is active.
The RBMN operates from Mehoopany down to Coxton Yard, then uses the ex-LV trackage which loops around through Duryea to Dupont, then down the old LV Mountain bypass to Penobscot & Crestwood, then continues on mostly ex-CNJ trackage to Jim Thorpe and Lehighton. See map: http://www.rbmnrr.com/system-maps/
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That leaves only the Luzerne & Susquehanna which operates in the Wilkes-Barre city area, using county owned tracks and is much more in a state of disrepair than the others and sees much less traffic. The main line (if you could call it that) runs from Coxton Junction south along ex-LV trackage through downtown Wilkes-Barre, and then down to the Hanover Industrial Park, where tracks end. The portion below Hanover St. in Wilkes-Barre is ex-CNJ trackage. Also, it has an ex-D&H line from a switch where the Hudson Yard used to be, running south to a junction with its main line at Butler St and Wilkes-Barre Blvd in Wilkes-Barre. The other line, an ex-PRR line, branches off the main line at Hanover St. and continues southwest to a junction with the CP just north of the old Buttonwood Yard area. That's about all that's left in Wilkes-Barre except for some abandoned trackage here and there which is disconnected with any of the above.