When the NY&A gets a new customer which requires a new spur or siding track to be put in, does the LIRR pay for the track work, or does the NY&A pay for the work? I guess the same would apply for those customer sidings and spurs that already exsist and who would pay to maintain them.
Outside contractors usually put in new spurs.
For customers such as Coastal that use the wye, I believe pay royalities to the Long Island.