State Route 190
...that, despite being added to California's state highway system in 1933, the portion of State Route 190 over the Sierra Nevada remains unconstructed?
...that, despite being added to <a class="mw-redirect" href="./California's_state_highway_system" id="mwEa0" rel="mw:WikiLink" title="California's state highway system">California's state highway system</a> in 1933, the portion of <b id="mwEa4"><a class="mw-redirect" href="./State_Route_190_(California)" id="mwEa8" rel="mw:WikiLink" title="State Route 190 (California)">State Route 190</a></b> over the <a class="mw-redirect" href="./Sierra_Nevada_(U.S.)" id="mwEbA" rel="mw:WikiLink" title="Sierra Nevada (U.S.)">Sierra Nevada</a> remains unconstructed?