Back on my days working the Poughkeepsie switcher for Conrail, we'd come right up to the gate on the east end of the [burned] bridge, but wouldn't actually go out onto it. I hired out after the fire, so I never got to work across it, but guys I worked with did.
I also worked "on the Maybrook side" on the Campbell Hall local, 1985-91 off-and-on. Dave1905 mentions the L&HR -- got to work to Warwick and ran the work train that rehabilitated the L&H for the Susquehanna in 1987. Also laid down the switch that became Hudson Jct., so the Susquehanna didn't have to run into Maybrook and then run around their trains to get to the Southern Tier line.
Campbell Hall was a great place to work local freight in the late 80's...