U.S. Route 1 in Maine

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This article is about the section of U.S. Route 1 in Maine. For the entire length of the highway, see U.S. Route 1.

U.S. Route 1 marker

U.S. Route 1
Route information
Maintained by MaineDOT
Length: 527 mi[1][2] (848 km)
Existed: 1926 – present
Major junctions
South end: US 1.svg US 1 in Portsmouth, NH
  I-95 (ME).svg I-95 in Kittery
I-195 (ME).svg I-195 in Saco
I-295 (ME).svg I-295 in Portland /Yarmouth
US 302.svgMA Route 100.svg US 302/SR 100 in Portland
Falmouth Spur (I-495) in Falmouth
MA Route 9.svg SR 9 in Calais
US 2.svg US 2 in Houlton
I-95 (ME).svg I-95 in Houlton
MA Route 161.svg SR 161 in Caribou
North end: NB 161.png Route 161 in Clair, NB
Counties: York, Cumberland, Sagadahoc, Lincoln, Knox, Waldo, Hancock, Washington, Aroostook
Highway system

State Routes in Maine

I‑495 US 1A
Route 20 N.E. Route 25

In the U.S. state of Maine, U.S. Route 1 (US 1) is a major north–south state highway serving the eastern part of the state. It parallels the Atlantic Ocean from New Hampshire north through Portland, Brunswick, and Belfast to Calais, and then the St. Croix River and the rest of the Canadian border via Houlton to Fort Kent. The portion along the ocean, known as the Coastal Route, provides a scenic alternate to Interstate 95.

Route description[edit]

Route 1 enters Maine from New Hampshire by bridging the Piscataqua River at Kittery on the Memorial Bridge. However, this bridge was abruptly closed in July, 2011 due to structural defects with a new bridge planned to replace it. That new bridge opened in the summer of 2013. Following the sandy southern Maine coast, the highway bridges the Cape Neddick River in Cape Neddick, Josias River and Ogunquit River in Ogunquit, the Webhannet River in Wells, and Merriland River, Mousam River and Kennebunk River in Kennebunk. After bridging the Saco River between Biddeford and Saco the highway bridges the Nonesuch River in Scarborough.

In South Portland, US 1 merges with I-295 at exit 4 and continues north through downtown Portland to Tukey's Bridge, now on I-295, before separating at exit 9. The Charles Loring Highway is part of US 1 in Portland, Maine. Like Loring Air Force Base it is named for Charles J. Loring, Jr..

North of Portland, the highway bridges the Presumpscot River in Falmouth, the Royal River in Yarmouth, and the Cousins River in Freeport before following the Androscoggin River through Brunswick and bridging the Kennebec River between Bath and Woolwich. The section between Brunswick (at its junction with US 201) and Bath is a four lane freeway, and the route continues as a four lane expressway through most of Bath, then crosses on a two lane viaduct before becoming four lanes again on the bridge over the Kennebec River. It then becomes a three lane road (with center turning lane) through Woolwich and then reverts to two lanes after that as it continues north towards Wiscasset.

The highway bridges the Sheepscot River in Wiscasset, the Damariscotta River in Damariscotta, the Medomak River in Waldoboro, and the Saint George River in Thomaston before reaching Rockland.

In Rockland there is a bypass of downtown (US 1A) which travels along Broadway and Maverick Streets, while US 1 itself has a one way pair with Main Street and Union Street in the downtown Rockland area (Main Street traffic goes north with two lanes, while Union St. traffic is southbound).

The highway follows the coast of Penobscot Bay bridging the Goose River in Rockport, the Ducktrap River in Lincolnville, the Little River in Northport, and the Passagassawakeag River in Belfast before bridging the Penobscot River at Bucksport. The Atlantic coast is less frequently visible as the highway bridges the Orland River in Orland, the Union River in Ellsworth, Sullivan Harbor, the Narraguagus River in Cherryfield, the Harrington River in Harrington, the Pleasant River at Columbia Falls, the Indian River in Addison, and the Chandler River in Jonesboro.

The monument marking the northern terminus in Fort Kent, ME

After bridging the East Machias River and Machias River in Machias the highway turns inland along Passamaquoddy Bay to bridge the Orange River in Whiting, the Dennys River in Dennysville and the Pennamaquan River in Pembroke. The highway then follows the Saint Croix River through Calais and turns inland at Woodland. The interior route bridges Grand Falls Flowage at Princeton, the Meduxnekeag River in Houlton, the North Branch Meduxnekeag River in Monticello, and the Aroostook River in Presque Isle before following the Saint John River upstream from Van Buren to Fort Kent.

From Madawaska to its "northern" terminus at the Clair – Fort Kent Bridge in Fort Kent, US 1 North actually travels geographically south (see 47°18′56″N 68°22′39″W / 47.315552°N 68.37759°W / 47.315552; -68.37759). The route's most northerly geographic point is at its intersection with the Edmundston–Madawaska Bridge in Madawaska, across the Saint John River from Edmundston, New Brunswick, Canada.


US 1 south of Calais was initially part of the Atlantic Highway, and became Route 1 when the New England road marking system was established in 1922.[3] The northward continuation from Calais was later designated as part of Route 24. In the original plan, Route 24 was to run from Brunswick to Moosehead Lake in Greenville. By 1925, however, Maine had transferred the Route 24 designation to a completely new alignment on the eastern edge of the state, running from Calais to Madawaska at a border crossing with Edmundston, New Brunswick.

The initial 1925 plan for the U.S. Highway system took US 1 along the better-quality inland route (then Route 15)[4] between Bangor and Houlton, and placed US 2 on the coastal route.[5] This changed in the final 1926 plan, when the inland shortcut — now generally followed by Interstate 95 - became part of US 2.[6]

The Waldo-Hancock Bridge opened in 1931,[7] allowing US 1 to bypass Bangor; the old route became US 1A.

The portion between Portland and Brunswick was rebuilt, mainly as a four-lane divided highway, in the 1950s, and later absorbed into I-95 (now I-295). A freeway from Brunswick east to Bath was built in the 1960s.

Major Junctions[edit]

County Location Mile km Exit Destinations Notes
York Kittery 0.00 0.00 US 1 south Continuation into New Hampshire.
0.6 1.0 SR 103
1.5 2.4 SR 236 Rotary
To I‑95 south (Maine Turnpike) to US 1 Bypass south (northbound only).
Southern terminus of concurrency with US 1 Bypass (southbound only).
1.7 2.7 SR 236 north / US 1 Bypass south Northern terminus of concurrency with SR 236.
Southern terminus of concurrency with US 1 Bypass.
1.8 2.9 US 1 Bypass south Northern terminus of US 1 Bypass.
Northern terminus of concurrency with US 1 Bypass (southbound only).
Southbound exit and northbound entrance only.
2.1 3.4 I‑95 (Maine Turnpike) No southbound exit.
Northbound entrance can only be accessed by US 1 south.
Exit 3 on I-95 (Maine Turnpike).
2.4 3.9 SR 101 north Southern terminus of SR 101.
York 5.5 8.9 York River.
6.7 10.8 SR 91 west Eastern terminus of SR 91.
7.1 11.4 US 1A north Southern terminus of US 1A.
7.4 11.9 To I‑95 (Maine Turnpike) Exit 7 on I-95 (Maine Turnpike)
10.6 17.1 US 1A south Northern terminus of US 1A.
Ogunquit 14.2–
No major intersections.
Wells 18.2 29.3 SR 9B west Eastern terminus of SR 9B.
20.2 32.5 SR 9 west / SR 109 north to I‑95 (Maine Turnpike) Western terminus of first concurrency with SR 9.
Southern terminus of SR 109.
22.1 35.6 SR 9 east Eastern terminus of first concurrency with SR 9.
Kennebunk 25.0 40.2 SR 9A west / SR 99 west Western terminus of concurrency with SR 9A.
Eastern terminus of SR 99.
25.4 40.9 SR 9A east / SR 35 Eastern terminus of concurrency with SR 9A.
Short wrong-way concurrency with SR 35.
Arundel 26.6–
No major junctions.
Biddeford 31.7 51.0 Biddeford Connector To I‑95 (Maine Turnpike) to SR 111
32.9 52.9 SR 111 to I‑95 (Maine Turnpike)
Saco 34.8 56.0 SR 5 north / SR 9 north / SR 112 Northern terminus of wrong-way concurrency with SR 5.
Southern terminus of SR 112.
35.7 57.5 I‑195 / SR 5 south Exit 2A and 2B on I-195.
To I‑95 (Maine Turnpike) via I-195 west.
Southern terminus of wrong-way concurrency with SR 5.
Cumberland Scarborough 40.5 65.2 SR 9 west Western terminus of second concurrency with SR 9.
43.5 70.0 SR 114 north / SR 207 east Southern terminus of SR 114.
Western terminus of SR 207.
44.7 71.9 Scarborough Connector To I‑95 (Maine Turnpike) to I‑295 Southbound exit and northbound entrance only.
South Portland 46.0 74.0 Maine Turnpike Approach To I‑95 (Maine Turnpike) to I‑295
46.2 74.4 SR 9 east Eastern terminus of concurrency with SR 9.
47.7 76.8 4 I‑295 north and Veterans Memorial Bridge To US 1A Southbound exit and entrance only.
Southern terminus of concurrency with I-295.
Portland 49.0 78.9 5 US 1A north (Fore River Parkway) / SR 22 (Congress Street) Signed as exits 5A and 5B southbound
50.0 80.5 6 US 302 (Forest Avenue) / SR 100 Signed as exits 6A and 6B; US 1 removed from Forest Avenue in May 2007
50.5 81.3 7 US 1A south (Franklin Street) Northern terminus of US 1A.
51.3 82.6 8 SR 26 (Washington Avenue) SR 26 concurency for about 14 mile (0.40 km)
52.0 83.7 9 I‑295 north Northern terminus of concurrency with I-295.
Presumpscot River 52.6 84.7 Martin Point Bridge
Cumberland Falmouth 53.9 86.7 SR 88 north Southern terminus of SR 88.
55.0 88.5 Bucknam Road To I‑295
55.3 89.0 I‑495 west (Falmouth Spur) to I‑95 (Maine Turnpike)
Cumberland 58.4 94.0 Turtle Road To SR 88 Bridge
Yarmouth 59.7 96.1 I‑295 Exit 15 on I-295.
60.8 97.8 SR 115 Interchange.
61.8 99.5 SR 88 south Northern terminus of SR 88.
62.0 99.8 I‑295 Exit 17 on I-295.
Freeport 65.4 105.3 Desert Road To I‑295
67.0 107.8 SR 125 north / SR 136 north to I‑295
68.5 110.2 I‑295 north Exit 24 on I-295.
Northbound exit and entrance only.
Brunswick 73.7 118.6 I‑295
75.5 121.5 US 201 / SR 24 north First exit on freeway (exits are not numbered).
Southern terminus of US 201.
76.2 122.6 SR 196 west Eastern terminus of SR 196.
78.2 125.9 SR 24
Sagadahoc West Bath 81.0 130.4 New Meadows Road
Bath 82.7 133.1 Congress Avenue / State Road
83.4 134.2 SR 209 south Northern terminus of SR 209.
Androscoggin River 84.0 135.2 Sagadahoc Bridge
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


Route map: Google / Bing

  1. ^ Maine State Route Log via floodgap.com
  2. ^ American Association of State Highway and Transportation Officials, United States Numbered Highways, 1989 Edition
  3. ^ New York Times, Motor Sign Uniformity, April 16, 1922, p. 98
  4. ^ Rand McNally Auto Road Atlas, 1926, accessed via the Broer Map Library
  5. ^ Report of Joint Board on Interstate Highways, October 30, 1925, Approved by the Secretary of Agriculture, November 18, 1925
  6. ^ United States System of Highways, November 11, 1926
  7. ^ Maine Department of Transportation, Waldo-Hancock Bridge, accessed October 2007

U.S. Route 1
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