F74265A wrote: ↑Wed Oct 23, 2024 1:07 pm
If as rumored here today substantial clearance work is needed , and not even started, in Worcester Lincoln sq area, how does DS traffic start in May as otherwise rumored here by historically pretty accurate posters?
Here's what I see as the facts supporting a likelihood that the Worcester Lincoln Square tunnel will be the most challenging of the entire project but without concluding it will be "substantial" and made in light of the Fitchburg Sub overhead bridge (OHB) reported to be raised 33 inches from ~19'3" to ~22' above the rail.
Of 8 possible fixed overhead structures for NS-funded clearance upgrades on the P&W segment stipulated in the NSR Settlement Agreement with no observed or reported work underway, the Lincoln Square tunnel is ~1300-1400' long cut-and-fill concrete "box" construction cleared earlier to ~19'6", ~250' north of the School St. grade crossing, and along with the Lincoln Street OHB part of a 1950's grade separation project. For what it's worth, there's been rumors of a major water, sewer or storm water line located under the tunnel.
By way of illustration, here's a couple of videos shot just outside the tunnel:
north end
https://www.youtube.com/watch?v=Vd3MLWpsfDg&t=1s
south end
https://www.youtube.com/watch?v=HEROMqXPzrs&t=18s
Of the remaining 6 overhead structures the other tunnel under Saint Vincent hospital was built to what had been newly enacted regulations still in place requiring full clearance. If there's even additional work required, perhaps it would be around 2 of 3 OHB's where undercutting does not look problematic in addition to 2 billboards far above track level.
Further toward considering WML track rumors in light of the NSR Settlement Agreement, if N. Worcester yard tracks are added these could possibly be used simply to support Ayer local service and toward potential along the WML, independent of possibly re-connecting to the Fitchburg Sub and/or for possible P&W interchange.
Lastly, in consideration of what Mr. Barlow has offered, I believe CSX does pay fees on MA DOT track they once owned and in terms of Northeast Corridor track occupation, that would have to be made against ~1-2 hours Mansfield-Attleboro Sun-Thu. nights in today's operation for that portion of CSX's traffic to its south.