Maine Roads - Maine Highways Map

Find Maine Interstates and Federal Highways


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History of Interstates and U.S. Highways in Maine

Maine’s Interstate and U.S. highway system is critical for connecting the state’s rural and coastal communities to the broader Northeast region. Early highways such as U.S. 1 and U.S. 2 have long been important for facilitating travel along the state’s coastline and into the inland areas. The construction of the Interstate Highway System in the 1950s and 1960s brought major Interstates like I-95, which has become Maine’s primary transportation corridor.

Maine’s highways are essential for moving goods and people across the state, particularly along I-95, which serves as the major north-south route from the New Hampshire border to the Canadian border. Maine’s highways also play a vital role in tourism, with millions of visitors traveling to destinations such as Acadia National Park and the state’s picturesque coastal towns via U.S. 1 and I-295.

The state continues to invest in its Interstate infrastructure, with projects focused on improving safety and capacity on I-95, as well as upgrading critical rural routes such as U.S. 1. Future projects will include highway expansions and additional safety improvements to ensure Maine’s highways can continue to meet the state’s economic and transportation needs.

Busiest and Longest Federal Interstates and U.S. Highways in Maine

Interstate or Highway Length (mi) Length (km) Southern or Western Terminus Northern or Eastern Terminus Created
I-95 303 488 New Hampshire Border Canada Border 1957
I-295 52 84 Portland, ME Gardiner, ME 1958
U.S. 1 527 848 New Hampshire Border Canada Border 1926
U.S. 2 273 439 New Hampshire Border Canada Border 1926
U.S. 201 170 274 Brunswick, ME Canada Border 1926
U.S. 302 53 85 Portland, ME New Hampshire Border 1926
U.S. 202 94 151 New Hampshire Border Augusta, ME 1926
U.S. 1A 118 190 Ellsworth, ME Brewer, ME 1926
U.S. 1B 8 13 Portsmouth, NH Kittery, ME 1926
U.S. 201A 30 48 Skowhegan, ME Madison, ME 1926

Maine Designated Highways



Maine Interstate Highway 95, I-95 Conn N
Maine Interstate Highway 95, I-95 Conn S
Maine Interstate Highway 95, I-95 N
Maine Interstate Highway 95, I-95 S
Maine Interstate Highway 195, I-195 E
Maine Interstate Highway 195, I-195 W
Maine Interstate Highway 295, I-295 Conn
Maine Interstate Highway 295, I-295 Conn N
Maine Interstate Highway 295, I-295 Conn S
Maine Interstate Highway 295, I-295 N
Maine Interstate Highway 295, I-295 S
Maine Interstate Highway 395, I-395 E
Maine Interstate Highway 395, I-395 W
Maine US Highway 1, Acadia Hwy
Maine US Highway 1, Atlantic Hwy
Maine US Highway 1, Bangor Rd
Maine US Highway 1, Baring St
Maine US Highway 1, Bath Rd
Maine US Highway 1, Baxter Blvd
Maine US Highway 1, Bedford St
Maine US Highway 1, Belfast Rd
Maine US Highway 1, Benjamin St
Maine US Highway 1, Birch St
Maine US Highway 1, Blue Star Memorial Hwy
Maine US Highway 1, Border Xing
Maine US Highway 1, Bridge St
Maine US Highway 1, Broadway
Maine US Highway 1, Bucksport Rd
Maine US Highway 1, Calais Rd
Maine US Highway 1, Camden St
Maine US Highway 1, Cape Neddick Rd
Maine US Highway 1, Caribou Rd
Maine US Highway 1, Church St
Maine US Highway 1, Commercial St
Maine US Highway 1, Court St
Maine US Highway 1, Downeast Hwy
Maine US Highway 1, Dublin St
Maine US Highway 1, E Court St
Maine US Highway 1, E Main St
Maine US Highway 1, Elm St
Maine US Highway 1, Forest Ave
Maine US Highway 1, Fort Fairfield Rd
Maine US Highway 1, Fort Rd
Maine US Highway 1, Fort St
Maine US Highway 1, Franklin Arterial
Maine US Highway 1, Frenchville Rd
Maine US Highway 1, Hamlin Rd
Maine US Highway 1, High St
Maine US Highway 1, Houlton Rd
Maine US Highway 1, Hunter Ave
Maine US Highway 1, Kendall St
Maine US Highway 1, Kennedy Hwy
Maine US Highway 1, Leeman Hwy
Maine US Highway 1, Limestone Rd
Maine US Highway 1, Long Beach Ave
Maine US Highway 1, Lower Main St
Maine US Highway 1, Machias Rd
Maine US Highway 1, Main Rd
Maine US Highway 1, Main Rd N
Maine US Highway 1, Main Rd S
Maine US Highway 1, Main St
Maine US Highway 1, Maverick St
Maine US Highway 1, Milbridge Rd
Maine US Highway 1, Military St
Maine US Highway 1, Mill St
Maine US Highway 1, N Main St
Maine US Highway 1, New County Rd
Maine US Highway 1, Newmarch St
Maine US Highway 1, North Rd
Maine US Highway 1, North St
Maine US Highway 1, Northport Ave
Maine US Highway 1, Oak St
Maine US Highway 1, Ocean Ave
Maine US Highway 1, Old Portland Rd
Maine US Highway 1, Park Ave
Maine US Highway 1, Park St
Maine US Highway 1, Payne Ave
Maine US Highway 1, Pleasant St
Maine US Highway 1, Portland Rd
Maine US Highway 1, Post Rd
Maine US Highway 1, Presque Isle Rd
Maine US Highway 1, Presque Isle St
Maine US Highway 1, Railroad Ave
Maine US Highway 1, Rankin St
Maine US Highway 1, River Rd
Maine US Highway 1, S Main St
Maine US Highway 1, Sagadahoc Brg
Maine US Highway 1, Searsport Ave
Maine US Highway 1, Short St
Maine US Highway 1, St John St
Maine US Highway 1, State Rd
Maine US Highway 1, State St
Maine US Highway 1, Union St
Maine US Highway 1, US Route 1
Maine US Highway 1, US-1
Maine US Highway 1, US-1 Alt
Maine US Highway 1, US-1 Byp
Maine US Highway 1, US-1 Conn
Maine US Highway 1, US-1 N
Maine US Highway 1, US-1 S
Maine US Highway 1, Valley St
Maine US Highway 1, Van Buren Rd
Maine US Highway 1, Veranda St
Maine US Highway 1, W Commercial St
Maine US Highway 1, W Main St
Maine US Highway 1, Waldoboro Rd
Maine US Highway 1, Whitneyville Rd
Maine US Highway 1, Wilson St
Maine US Highway 1, York St
Maine US Highway 2, Airport Rd
Maine US Highway 2, Bangor Rd
Maine US Highway 2, Bangor St
Maine US Highway 2, Bridge St
Maine US Highway 2, Canaan Rd
Maine US Highway 2, Center St
Maine US Highway 2, Central St
Maine US Highway 2, College Ave
Maine US Highway 2, County Rd
Maine US Highway 2, Dyer Brook Rd
Maine US Highway 2, Elm St
Maine US Highway 2, Farmington Falls Rd
Maine US Highway 2, Franklin St
Maine US Highway 2, Hammond St
Maine US Highway 2, Hammond St Ext
Maine US Highway 2, Hancock St
Maine US Highway 2, Harlow St
Maine US Highway 2, Houlton Rd
Maine US Highway 2, Island Ave
Maine US Highway 2, Lincoln Ave
Maine US Highway 2, Macwahoc Rd
Maine US Highway 2, Madison Ave
Maine US Highway 2, Main Rd
Maine US Highway 2, Main St
Maine US Highway 2, Mayville Rd
Maine US Highway 2, Mercer Rd
Maine US Highway 2, Military Rd
Maine US Highway 2, Military St
Maine US Highway 2, Odlin Rd
Maine US Highway 2, Outer Hammond St
Maine US Highway 2, Park St
Maine US Highway 2, Pine Tree Rd
Maine US Highway 2, Portland St
Maine US Highway 2, Prospect Ave
Maine US Highway 2, River Rd
Maine US Highway 2, RR 2
Maine US Highway 2, Rumford Ave
Maine US Highway 2, Russell St
Maine US Highway 2, Sherman St
Maine US Highway 2, Skowhegan Rd
Maine US Highway 2, Smyrna St
Maine US Highway 2, State St
Maine US Highway 2, US-2
Maine US Highway 2, US-2 Alt
Maine US Highway 2, W Bethel Rd
Maine US Highway 2, W Broadway
Maine US Highway 2, W Front St
Maine US Highway 2, Water St
Maine US Highway 2, Waterville Rd
Maine US Highway 2, Wilton Rd
Maine US Highway 2, Winding Hill Rd
Maine US Highway 2A, Center St
Maine US Highway 2A, College Ave
Maine US Highway 2A, Stillwater Ave
Maine US Highway 201, Augusta Rd
Maine US Highway 201, Bangor St
Maine US Highway 201, Bay St
Maine US Highway 201, Bridge St
Maine US Highway 201, Brunswick Ave
Maine US Highway 201, Brunswick Rd
Maine US Highway 201, Canada Rd
Maine US Highway 201, College Ave
Maine US Highway 201, Cony Cir
Maine US Highway 201, Ferry St
Maine US Highway 201, Front St
Maine US Highway 201, Halifax St
Maine US Highway 201, Lakewood Rd
Maine US Highway 201, Madison Ave
Maine US Highway 201, Madison Rd
Maine US Highway 201, Main St
Maine US Highway 201, Maine Ave
Maine US Highway 201, Maine St
Maine US Highway 201, Memorial Brg
Maine US Highway 201, Memorial Cir
Maine US Highway 201, Memorial Dr
Maine US Highway 201, N Main St
Maine US Highway 201, Old Point Ave
Maine US Highway 201, River Rd
Maine US Highway 201, Riverside Dr
Maine US Highway 201, S Main St
Maine US Highway 201, Solon Rd
Maine US Highway 201, State St
Maine US Highway 201, US-201 Alt
Maine US Highway 201, Water St
Maine US Highway 201, Waterville Rd
Maine US Highway 202, Albion Rd
Maine US Highway 202, Bangor Rd
Maine US Highway 202, Bartlett's Bridge Rd
Maine US Highway 202, Belfast Rd
Maine US Highway 202, Carl Broggi Hwy
Maine US Highway 202, China Rd
Maine US Highway 202, Cottage St
Maine US Highway 202, Court St
Maine US Highway 202, Gorham Byp
Maine US Highway 202, Gray Rd
Maine US Highway 202, Hollis Rd
Maine US Highway 202, Lakeview Dr
Maine US Highway 202, Lebanon St
Maine US Highway 202, Lewiston Rd
Maine US Highway 202, Main St
Maine US Highway 202, Minot Ave
Maine US Highway 202, N Belfast Ave
Maine US Highway 202, Narragansett St
Maine US Highway 202, Narragansett Trail
Maine US Highway 202, Oak St
Maine US Highway 202, Portland Rd
Maine US Highway 202, Sanford Rd
Maine US Highway 202, State St
Maine US Highway 202, Summer St
Maine US Highway 202, Unity Rd
Maine US Highway 202, US-202
Maine US Highway 202, W Gray Rd
Maine US Highway 202, Washington St
Maine US Highway 202, Washington St N
Maine US Highway 202, Washington St S
Maine US Highway 202, Waterboro Rd
Maine US Highway 202, Western Ave
Maine US Highway 202, Winter St
Maine US Highway 202, Yarmouth Rd
Maine US Highway 302, Bridgton Rd
Maine US Highway 302, Forest Ave
Maine US Highway 302, Main St
Maine US Highway 302, N High St
Maine US Highway 302, Portland Rd
Maine US Highway 302, Portland St
Maine US Highway 302, Roosevelt Trail
Maine US Highway 302, US-302