Location: 10th St and Philadelphia Pk, Marcus Hook Right about here we’ll enter Pennsylvania, though there’s no signage to that effect. Location: 10th St and Blueball Ave, Marcus Hook There’s a sign! Location: 10th St and Market St, Marcus Hook As we enter downtown Marcus Hook we’ll approach Route 452. Location: 10th St and Market … Continue reading U.S. Route 13, DE State Line to PA-452