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Maine State Route 178

State Route 178 marker

State Route 178
Route information
Maintained by MaineDOT
Length: 13.27 mi (21.36 km)
Existed: 1925 – present
Major junctions
South end: SR 9 / State Street in Brewer
  SR 9 in Eddington
North end: US 2 in Milford
Location
Counties: Penobscot
Highway system
SR 177 SR 179

State Route 178 marker

State Route 178 is part of Maine's system of numbered state highways, located along the Penobscot River northeast of Bangor. It runs from State Street in Brewer (where it is overlapped with State Route 9) north to Milford, where it terminates at U.S Route 2 just east of Old Town.

SR 178 begins in the south in Brewer, at the intersection of North Main Street (SR 9) and State Street. It begins overlapped with SR 9. The two routes proceed concurrently along the Penobscot River for 4 miles (6.4 km) towards Eddington. After crossing the town line, SR 178 splits to the north while SR 9 (also known as the "Airline" on this stretch) begins its long journey to US 1 in Baileyville (near Calais), located 83 miles (134 km) to the northeast.

SR 178 continues northward along the river, passing through the town of Bradley before reaching Milford - where it terminates at US 2 (which crosses the river from Old Town, just to the west).

The southern terminus of SR 178 is somewhat strange in that it is not located at an intersection with another numbered route; SR 178 instead ends at State Street, while SR 9 continues on North Main Street for one block towards modern US 1A.


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