Took me awhile to figure out the "page 2" aspect, too. Very cool page.
But using Google map (satellite), I see what looks like a ROW North of what you've got for the Lancaster line.
It starts in the NW at 110, just North of 117, goes SE through some playing fields, starts and stops until it gets to Harvard Rd, where it's pretty clear to 495 (just south of 117). Crosses 495, goes through Camp Resolute (as edbear said and ewh confirmed), crosses 85, dives towards the SouthEast, and pretty much ends at Manning Street. That looks to my untrained eyes like what you might see from 495, as Red Wing originally suggested.