Question: Which was opened first, Louisville and Portland Canal or Schuylkill Canal?
Sentence (from "Manayunk Bridge"): The Manayunk Bridge (a.k.a. Manayunk Viaduct) is a historic bridge in Pennsylvania across the Schuylkill River and adjacent Schuylkill Canal between Bala Cynwyd in Montgomery County and the Manayunk neighborhood of Philadelphia.
Relevant evidence: No