State Route 5 is a state highway in Maine that runs from an intersection with State Route 9 in Old Orchard Beach, to an intersection with State Route 120 in Andover.

State Route 9 (SR 9) is a numbered state highway in Maine, running from the New Hampshire border at Berwick in the west to the Canada–US border with New Brunswick at Calais in the east. SR 9 runs a total of 289 miles (465 km).