East Haven. What's shocking is that there is a structure that close to the gauge. The third rail shoes by definition have to go outside of the plate C clearance in order to get to a non-interfering third rail, but it's not THAT far out, so it's shocking that there are any other structures in the way. Plate H well cars interfere with third rail, so apparently they wouldn't fit through there either (assuming only one level of containers as full Plate H is 4'8" too tall for that area).
It's a bizarre problem and kind of nuts that there's a clearance that tight in the first place, but it's not really that big of a deal operationally, as the third rail shoes could be put back on the SLE M-8s to make them back into MN M-8's. It does prevent direct service to GCT from OSB, although there probably isn't much appetite for running 9-car or larger M-8 sets out to OSB, just to run them more than half empty to NHV, as it's sort of a waste of equipment.