You were born much too late...It ran that way before the Hell Gate Bridge was built, allowing thru service from Boston to Washington...I studied in Poughkeepsie when the New Haven ran over that bridge to Maybrook. Speed limit on the bridge: 5 MPH. I never knew the Federal ran that route. I'm having a difficult time imagining how the train got from Boston to Danbury and on westward to Poughkeepsie from there. When I rode it, it was an overnight Washington-NYC-New Haven-Boston train [late 60's] In my three years there, I never remember seeing a passenger train on the bridge.