I dont remember the mile post of that curve but a freind that used to be an engineer on one of New Havens FL-9's once told me that curve was the worst curve in the notheast corridor.We used to play in the old industrial dump next to the tracks west of the Harbor st bridge. And I can remember the New Haven and Amtrak trains always slowing down before that curve going south and not accelerating hard until after they cleared the curve going north after they departed New Haven heading towards saybrooke.Somewhere I've got pictures of a massive freight derailment in that curve in the late 50's or early 60's.and I remember to the north of harbor st there was a siding that feed the Atlantic wire complex.The next time I go out there I'll get sme pic's and post them.