Tacony–Palmyra Bridge
Despite interruptions due to occasional openings for passing shipping traffic ( the upper Delaware River is navigable as far north as Van Sciver Lake near Bristol , Pennsylvania ) , it serves as a lower-cost alternative to the more southerly , six-lane , high-span Betsy Ross Bridge , which charges $5 for the westbound crossing . 
<triplet> Betsy Ross Bridge <subj> Delaware River <obj> crosses