Upper Bay Crossing. The former Lehigh Valley Railroad Upper Bay Lift Bridge across Newark Bay is a highlight of any trip across the National Docks Line towards Oak Island Yard. The New York City Skyline, is visible in the background, including the Freedom Tower, as Conrail Shared Assets Office Car Special (OCS) 101 crosses with Norfolk Southern Corp 5636 (GP38-2, née-PC 7692, GP38) and CSX 6159 (née-GP38-2S, WM 4260, GP40-2) leading NS 24 (Delaware, Super Dome, ex-Atchison, Topeka, and Santa Fe) and 23 (Buena Vista, Theater Car, ex-Southern Railway).