Lower Manhattan Expressway
... that a 156-foot (48 m) tunnel for the Lower Manhattan Expressway was built in New York City in the 1960s, but was never used?
... that a <span about="#mwt64" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"156"},"2":{"wt":"ft"},"3":{"wt":"m"},"adj":{"wt":"on"}},"i":0}}]}' id="mwBX0" typeof="mw:Transclusion">156-foot (48</span><span about="#mwt64" typeof="mw:Entity"> </span><span about="#mwt64">m)</span> tunnel for the <b id="mwBX4"><a href="./Interstate_78_in_New_York" id="mwBX8" rel="mw:WikiLink" title="Interstate 78 in New York">Lower Manhattan Expressway</a></b> was built in New York City in the 1960s, but was never used?