In my experience trackage access for LD trains is a different kettle of fish from trackage access for a regional system, For the latter usually the interested state has often got considerable leverage over the private line and can often strike a reasonably equitable deal, examples being Caltrans and UP, or VDOT and CSX. NCDOT had even more leverage with NS, while we have seen NYSDOT strike a good deal with CSX, and most surprisingly Florida DOT work with CSX. But as I said an LD train traveling through multiple states is a different kettle of fish, specially if all the states on the route do not want to gang up on the railroad.