Bow Bridge
... that of the three semi-deck lenticular truss bridges known to have been made, the Hadley, New York, Bow Bridge is the only one that still exists?
... that of the three semi-deck <a href="./Truss_bridge#Lenticular_truss" id="mwCXM" rel="mw:WikiLink" title="Truss bridge">lenticular truss bridges</a> known to have been made, the <a href="./Hadley,_New_York" id="mwCXQ" rel="mw:WikiLink" title="Hadley, New York">Hadley, New York</a>, <b id="mwCXU"><a href="./Hadley_Parabolic_Bridge" id="mwCXY" rel="mw:WikiLink" title="Hadley Parabolic Bridge">Bow Bridge</a></b> is the only one that still exists?