 Pennsylvania Route 45 Truck is a truck route designed to avoid this bottleneck, other sharp turns, and steep grades along mainline PA 45 in western Huntingdon County.The route is somewhat antiquated, concurrent entirely with other routes, and significantly longer than the twisty mainline.Traveling mostly in Franklin Township and Warriors Mark Township, the route begins in the west by branching northbound along Pennsylvania Route 453, before continuing east along Pennsylvania Route 550, and traveling south along Pennsylvania Route 350 to meet up with its parent.