Bridge 2: 55 feet above the river; abandoned; property of CSX. This is the only surviving bridge on which the ringstones have pointed tops, rather than a circular contour. It is the most endangered arch, because it has no chance of restoration due to it’s ownership and location across the mainline. Sometimes referred to as the Gator Tail’ or the ‘Orphan’ Arch. This bridge shows the most significant structural deterioration of any. Keystone Arch Bridges Trail. This arch lies also on Section #3 of Unkamit’s Path #hikethehilltowns with the #westernmasshilltownhikers #hilltownhistory