Railroad Forums
Moderators: GirlOnTheTrain, nomis, FL9AC, Jeff Smith
jlr3266 wrote: ↑Thu Mar 16, 2023 11:33 am That is correct. The drill rigs and materials need to reach out to the cofferdams/foundations. In theory, the temporary bridges will be removed, but so was the temporary one for Secaucus .Exactly, and now its falling apart. Would've been nice to be able to drive up to LACK and the locations to the west, but much of it is walkable.
PRRTechFan wrote: ↑Thu May 11, 2023 9:30 pm ...couldn't find any other posts on this. Amtrak and NJT service suspended for a while today due to "signal issues at the Portal Bridge". There are still delays tonight. I'm curious here... what possible "signal issues" could there be here that are taking upwards of 12, 18 or more hours to fix? There are two straight through tracks with a handful of limit switch interlocks to determine bridge closed, locked and mitre rail position.12-18 hours sounds more like they need to completely strip and rewire the signals. Maybe somebody was stealing copper again?
STrRedWolf wrote: ↑Fri May 12, 2023 7:12 amagain?PRRTechFan wrote: ↑Thu May 11, 2023 9:30 pm ...couldn't find any other posts on this. Amtrak and NJT service suspended for a while today due to "signal issues at the Portal Bridge". There are still delays tonight. I'm curious here... what possible "signal issues" could there be here that are taking upwards of 12, 18 or more hours to fix? There are two straight through tracks with a handful of limit switch interlocks to determine bridge closed, locked and mitre rail position.12-18 hours sounds more like they need to completely strip and rewire the signals. Maybe somebody was stealing copper again?
PRRTechFan wrote: ↑Fri May 12, 2023 9:24 pm I think all of the 25Hz 13kv & 132kv are on very high aerial lines that bypass the moveable span... But they've got to have some sort of both power and control underwater into the center pivot to operate the bridge itself.Good point. Just imagine 480 V motor current going into signal circuits. Or maybe just unground signal circuits getting crossed underwater with the 480 volt 3 phase.
west point wrote: ↑Sat May 13, 2023 1:12 pmSignal power (240/480V) cables got drilled along with low voltage signal cables that run from signal location to location. All the traction power stuff is overhead/aerial/on the new ROW.PRRTechFan wrote: ↑Fri May 12, 2023 9:24 pm I think all of the 25Hz 13kv & 132kv are on very high aerial lines that bypass the moveable span... But they've got to have some sort of both power and control underwater into the center pivot to operate the bridge itself.Good point. Just imagine 480 V motor current going into signal circuits. Or maybe just unground signal circuits getting crossed underwater with the 480 volt 3 phase.
