Is there to be a connection to the national rail network at Brickbottom, then? I can't imagine driving a rail train of any length through the Central Subway.Or Brickbottom. Lots and lots of flatbed deliveries, though theoretically a shove up Riverside Jct. from the Worcester Line can do the job. In most cases replacement rapid transit welded rail comes in max 200 ft. ribbon chunks and more onsite welding is required for the installation to net an 800 ft. length. You simply can't turn a rail train longer than 200 through some of the curves.
Yeah...it would be side-loaded by crane over the fence.The freight line railroad runs alongside the Green Line all along the new route. No need for a connection.
They're also still running heavy construction trucks over the ROW, so need a more level gravel surface for time being.so that, where needed, the ballast can fall into place between the ties via gravity (and mechanical shaking). After enough has fallen/shaken/tamped between the ties, they sweep off the extra.
Note that even though Green (Riverside Jct.) and Orange (Medford Jct.) have extant active connections to the RR network and Red an out-of-service one (via backup move from Track 61...RR switch temporarily spiked while the test track is in temp service), the differing wheel profiles of rapid transit vs. RR mean that work equipment isn't portable between the modes. Riverside Jct. changes from RR-profile rail grinding to trolley-profile rail grinding a few feet in from the Worcester Line switch where the rest of the spur was temporarily used as a Type 8 test track. You can shove materials cars at sub- 5 MPH speed from a freight or Commuter Rail work train off the mainline for purposes of reaching within a few feet of the switch into Riverside Yard-proper...but otherwise the derailment risk from incompatible wheels is too great to continue much further. Plus a locomotive won't clear the 600V trolley wires, so you can only take the freight train in so far from the back before rapid transit work equipment needs to reach across the switches and pull from the other direction to bring the loads the rest of the way into the yard. But even after making it into the trolley yard itself, the materials loads have to be completely transloaded off the RR cars onto work cars with rapid transit-ground wheelsets...because a freight gon or flatcar will never make it any distance down the D Line even at slow speed without derailing and quite likely taking out a cat pole in the process (nevermind surviving long enough on the tracks to reach a subway portal miles inbound).Is there to be a connection to the national rail network at Brickbottom, then? I can't imagine driving a rail train of any length through the Central Subway.