ceo wrote:And I was told in one of the station meetings prior to the redesign that the Lowell Line will be single-tracked through the work area for the duration, or at least until the bridges are rebuilt. I haven't heard if that's still the plan.
That's my understanding too.
The question then arises: Are the bridges being rebuilt to create 2 slots on the GLX's side, or "one slot each" that would allow the Lowell line to be moved one slot outward on the North (through places like Ball Square & Gilman) while the GLX takes a Lowell slot plus a new slot on the south of the ROW (much like has been done through Tufts/College Ave/Harvard St in Medford)
UrbEx seems to think the answer is (and I'm inclined to believe him) "Yes: along most of the route, the Lowell Line will have to be moved"
BostonUrbEx wrote:I believe the only place where the New Hampshire Route is properly aligned for GLX is at Tufts interlocking and the Havard St undergrade bridge. Everything from Havard St south to Washington St/Mystic Jct needs to be moved.