Longest Bridges in Maine

The longest bridge in Maine spans 4748.0 feet. The table below ranks the state's bridges by total structure length — from major river crossings and causeway spans to long highway overpasses.

How this ranking works

Length comes from the NBI structure length field and is shown in feet. It is best read as a scale and maintenance-complexity signal, not by itself as a safety signal.

Bridge	County	Length	Condition	Year Built
Casco Bay Bridge over Fore River	Cumberland	4748.0 ft	Fair	1998
I 95 over Piscataqua River RTE 103	York	4000.0 ft	Fair	1971
Leeman HWY over Kennebec River	Sagadahoc	2982.0 ft	Good	2000
US 1 Byp over Piscataqua River & Roads	York	2785.1 ft	Good	2018
Route 1 over Sheepscot River	Lincoln	2729.7 ft	Fair	1983
Little Deer Isle R over Eggemoggin Reach	Hancock	2504.9 ft	Fair	1939
Route 1 over Penobscot River(s Chan)	Waldo	2126.0 ft	Good	2007
Memorial DR over Kennebec River + Mcrr	Kennebec	2098.1 ft	Fair	1949
Carter Memorial DR over Kennebec R H2o ST & Rr	Kennebec	2027.9 ft	Fair	1997
Gilman RD over Casco Bay	Cumberland	2001.0 ft	Fair	1955
Bridge Street over ST John River	Aroostook	1842.8 ft	Good	2024
Searsport Av over Passagassawaukeag + Rr	Waldo	1630.9 ft	Fair	1963
Veterans Brg Rt1 over Fore River	Cumberland	1609.9 ft	Good	2012
I 395 over Penobscot Rv & S Main ST	Penobscot	1562.0 ft	Fair	1986
Patterson RD over Kennebec River	Lincoln	1480.3 ft	Good	2014
Union ST over Broad ST	Penobscot	1411.1 ft	Fair	1955
Route 1 over Presumpscot*river	Cumberland	1402.9 ft	Good	2014
I 95 over Eliot RD	York	1344.2 ft	Fair	1972
Leeman HWY over Middle ST	Sagadahoc	1285.1 ft	Good	2017
Harpswell Island R over Wills Strait (atl Ocean)	Cumberland	1167.0 ft	Fair	1926
River RD over Penobscot Rv	Penobscot	1122.4 ft	Fair	1971
Alfond Connector over Kennebec River	Kennebec	1108.3 ft	Good	2005
Route 196 over Androscoggin River	Cumberland	1086.0 ft	Fair	1997
Bridge ST over Moosabec Reach	Washington	1074.8 ft	Good	2020
I 95 NB over Main RD & Penobscot R.	Penobscot	1065.6 ft	Poor	1966
I 95 SB over Main RD & Penobscot R.	Penobscot	1055.1 ft	Poor	1966
I 95 SB over Kennebec River	Kennebec	1040.0 ft	Fair	1964
I 95 SB over Quarry RD	Kennebec	1024.0 ft	Fair	1960
I 95 NB over Quarry RD	Kennebec	1024.0 ft	Fair	1960
Route 1 over Taunton River	Hancock	1022.3 ft	Good	1999
State HWY 27 over Kennebec River + Mcrr	Kennebec	996.1 ft	Fair	1980
I 95 NB over Kennebec River	Kennebec	944.6 ft	Good	1964
Bridge RD over Penobscot River	Penobscot	937.7 ft	Good	2017
Fort ST over River Rr & Street	Aroostook	905.8 ft	Poor	1952
One ST over Piscataqua River Nh Road	York	897.0 ft	Good	2013
Washington ST over Lubec Narrows	Washington	878.9 ft	Poor	1962
Dickey RD over Saint John River	Aroostook	862.5 ft	Fair	1994
I-95 (nb) over Androscoggin River	Androscoggin	845.8 ft	Fair	1956
I-95(SB) over Androscoggin River	Androscoggin	845.8 ft	Fair	1956
Arrowsic RD over Sasonoa River	Sagadahoc	837.9 ft	Fair	1950
I-295 Northbound over Androscoggin River	Cumberland	831.4 ft	Fair	1971
I 295 SB over Androscoggin River	Cumberland	825.1 ft	Fair	1971
Penob River Br over Penobscot R & Rr Yard	Penobscot	815.6 ft	Fair	1997
Main ST over Androscoggin River	Cumberland	802.8 ft	Poor	1931
Limestone RD over Aroostook Riv Abandd Rr	Aroostook	801.2 ft	Poor	1956
Canaan RD over Sibley Pond	Somerset	793.6 ft	Good	2011
Portland ST over Androscoggin R. W Chanel	Oxford	748.0 ft	Poor	1929
Border Crsg over Saint John River	Aroostook	736.9 ft	Good	2014
Bridge ST over Saint John River	Aroostook	731.6 ft	Fair	1972
Gray RD over Mcrr & Presumpscot River	Cumberland	729.7 ft	Good	2011
Route 1 over Penobscot Riv (e Chan)	Hancock	724.7 ft	Fair	1988
Broad ST over Androscoggin River	Androscoggin	723.1 ft	Fair	1936
Poplar ST over Mud Pond Inlet	Penobscot	705.1 ft	Fair	1933
Rim RD over Machias River	Washington	701.1 ft	Fair	1972
Mountain RD over Ewing Narrows	Cumberland	680.4 ft	Fair	1974
Main RD over Cowsweag Narrows	Lincoln	680.4 ft	Fair	1974
Canaan RD over Kennebec River	Kennebec	647.0 ft	Fair	1983
I-95 (nb) over Washington ST & Mcrr	Androscoggin	640.1 ft	Fair	1956
I-95 (sb) over Washington ST & Mcrr	Androscoggin	640.1 ft	Fair	2012
Main ST over M C Rr & A Marsh	Sagadahoc	627.0 ft	Good	2024
I-95 (nb) over Saco River	York	620.1 ft	Fair	1947
I-95(SB) over Saco River	York	620.1 ft	Fair	1948
Bridge RD over Penobscot River	Penobscot	608.9 ft	Fair	1950
N Main ST over Androscoggin River	Oxford	607.3 ft	Good	2018
Trestle Road over Piscataquis River	Piscataquis	607.0 ft	Poor	1907
Buxton Road over Saco River	York	607.0 ft	Poor	1936
I 295 NB over Fore River	Cumberland	605.6 ft	Fair	1973
I 295 SB over Fore River	Cumberland	605.6 ft	Fair	1973
Court ST over Androscoggin River	Androscoggin	602.7 ft	Fair	1983
Riley RD over Androscoggin River	Franklin	602.0 ft	Poor	1966
Mutton LN over Interstate 95 SB	Kennebec	600.1 ft	Fair	1964
I-95 (sb) over York River	York	591.5 ft	Fair	1946
I- 95 (nb) over York River	York	591.5 ft	Fair	1946
Coffin ST over Piscataquis River	Penobscot	589.6 ft	Good	2012
Bridge ST over Kennebec River	Somerset	574.8 ft	Good	2011
Spring ST over Kennebec River	Kennebec	574.1 ft	Poor	1936
International Av over St. Croix River	Washington	565.6 ft	Good	2009
Moosehead Trl over Interstate 95 NB & SB	Penobscot	545.9 ft	Fair	1962
Barters Island RD over Back River (tidal Pass)	Lincoln	544.9 ft	Good	2011
Medway RD over East Branch Penobscot Rv	Penobscot	540.0 ft	Fair	1999
I 95 SB over Piscataquis R.	Penobscot	536.1 ft	Fair	1966
I 95 NB over Piscataquis River	Penobscot	535.4 ft	Fair	1975
IRR BIA RTE 201 over Penobscot River	Penobscot	531.5 ft	Fair	1985
Snakeroot RD over Interstate 95 NB & SB	Somerset	525.9 ft	Fair	1964
Ferry ST over Kennebec River	Somerset	522.3 ft	Fair	1955
ST RTE 232 over Androscoggin River	Oxford	516.4 ft	Good	2015
Route 1 over 295/nb Ramp 295 To 1/ptr	Cumberland	515.1 ft	Poor	1974
Lilac LN over York River	York	514.4 ft	Good	2010
Bennoch RD over I-95 NB & SB	Penobscot	512.8 ft	Fair	1965
I 295 NB over Back Bay (atlantic O)	Cumberland	507.9 ft	Fair	1960
Vietnam Vet Connec over W Chan Andro R & River R	Androscoggin	504.9 ft	Fair	1973
One ST over Piscataqua River	York	503.9 ft	Poor	1938
School ST over Androscoggin River	Oxford	503.3 ft	Good	2005
Dover-eliot RD over Salmon Falls River	York	494.8 ft	Poor	1969
Main ST over Saco River	York	488.8 ft	Good	2016
Tuttle Road over I-295 RTE US 1 & M C Rr	Cumberland	488.5 ft	Poor	1958
Route 1 over Damariscotta River	Lincoln	487.9 ft	Fair	1961
Center Bridge RD over Androscoggin River	Androscoggin	487.5 ft	Good	2014
Bellsqueeze RD over I-95 NB & SB	Kennebec	483.6 ft	Fair	1964
US 1 NB over I295 & Wash AVE NB & SB	Cumberland	480.0 ft	Fair	1987
Main ST over Kennebec R	Somerset	468.5 ft	Fair	1974
Main ST over Aroostook River	Aroostook	464.9 ft	Fair	1982
Belvedere RD over Interstate 95 NB & SB	Aroostook	461.6 ft	Fair	1967
Bridge ST over Kennebec River	Somerset	461.6 ft	Fair	1986
Mercer RD over Sandy River	Franklin	461.0 ft	Fair	1958
Old Town RD over I-95 NB & SB	Penobscot	461.0 ft	Fair	1965
Veterans Memorial over Androscoggin River	Androscoggin	455.1 ft	Fair	1973
Castle Hill RD over Aroostook River	Aroostook	455.1 ft	Fair	1971
Main ST over Stillwater River	Penobscot	454.7 ft	Fair	1949
Lincoln Access over I-95 (nb & Sb)	Penobscot	454.1 ft	Fair	1966
Hogan RD over Interstate 95 NB & SB	Penobscot	453.7 ft	Poor	1960
Casey RD over Interstate 95	Aroostook	451.1 ft	Poor	1967
Johnson Flat RD over Interstate 95 NB & SB	Somerset	440.9 ft	Fair	1964
I-95 (nb) over Lisbon St/rte 196 & Mcrr	Androscoggin	439.6 ft	Good	1956
I-95(SB) over Lisbon St/rte 196 & Mcrr	Androscoggin	439.6 ft	Fair	1956
Cow Team RD over Interstate 95 NB & SB	Aroostook	437.7 ft	Fair	1967
Carmel RD N over I-95 NB & SB	Penobscot	437.7 ft	Fair	1963
US 1 over B & A Rr	Aroostook	436.0 ft	Fair	1971
Precourt ST over B & M Rr	York	436.0 ft	Fair	1989
Cummings (spring) over I-95	Cumberland	433.1 ft	Good	2019
I 95 over Kenduskeag Str&valley Av	Penobscot	430.1 ft	Fair	1960
Veterans ST over Androscoggin River	Oxford	426.2 ft	Good	2000
Bridge ST over Kennebec River	Kennebec	425.9 ft	Fair	1972
Pattagumpus RD over W Br Penobscot River	Penobscot	422.2 ft	Good	2008
Wash Av SB over I295nb&sb&marginal Way	Cumberland	419.9 ft	Fair	1990
Us-1 NB To RTE 196 over Ramp B	Cumberland	419.9 ft	Fair	1997
Hill RD over Interstate 95 NB	Kennebec	419.9 ft	Fair	1964
Veterans Bridge over I295 & NB Us1 To 295 NB	Cumberland	419.0 ft	Fair	1974
US 1 SB over Maine Central Rr	Sagadahoc	417.3 ft	Fair	1966
I-95 SB over Bond Brook & Bond Bk RD	Kennebec	415.0 ft	Fair	1959
I-95 Northbound over Bond Brook & Bond Bk RD	Kennebec	412.1 ft	Fair	1959
Crystal RD over Interstate 95 NB & SB	Aroostook	410.4 ft	Fair	1967
I-295 SB over I-95	Cumberland	410.1 ft	Fair	1972
Bridge ST over Androscoggin River	Androscoggin	409.1 ft	Poor	1959
Mayville RD over Androscoggin River	Oxford	408.5 ft	Good	1968
Center ST over E Channel-penobscot Rv	Penobscot	408.5 ft	Fair	2007
Lagrange RD over I-95 NB & SB	Penobscot	408.1 ft	Poor	1965
Five Islands RD over Back River	Sagadahoc	407.2 ft	Good	2009
Water ST over Pleasant River	Washington	405.8 ft	Fair	1981
Dickey RD over Allagash River	Aroostook	405.5 ft	Fair	1992
Main ST over Mattawamkeag River	Penobscot	404.5 ft	Good	2023
I-295 SB Underpass over I-95	Kennebec	402.9 ft	Fair	1972
W Etna RD over I-95 NB & SB	Penobscot	400.3 ft	Fair	1962
Falmouth Spur Intr over I-95	Cumberland	398.0 ft	Fair	1956
Bridge ST over C Channel Kennebec River	Somerset	389.8 ft	Good	2003
Poplar ST over W Branch Penobscot River	Penobscot	388.5 ft	Good	2023
Cook RD over Interstate 95 NB & SB	Penobscot	386.2 ft	Fair	1963
Route 1 over Cod Cove	Lincoln	385.5 ft	Fair	1958
Main ST over ST Croix River	Washington	382.2 ft	Fair	1957
Portland RD over B & M Rr	York	382.2 ft	Fair	1937
Wilton RD over Sandy River	Franklin	380.6 ft	Good	1991
Station ST over Aroostook River	Aroostook	379.9 ft	Fair	1980
Old Bath Road over US 1 NB & SB	Cumberland	378.3 ft	Fair	1964
US 202 over Mcrr & Ramps To 41 & 133	Kennebec	376.3 ft	Fair	1955
Riley RD over Androscoggin River	Franklin	371.1 ft	Poor	1966
Bay ST over Sebasticook River	Kennebec	371.1 ft	Fair	1960
Hendricks Hill RD over Townsend Gut/atlantic O	Lincoln	369.1 ft	Fair	1939
Payne Road over I-95	Cumberland	368.1 ft	Good	2005
Dinsmore RD over Interstate I-95 NB & SB	Kennebec	368.1 ft	Fair	1958
Howes Corner RD over West Chann Androscoggin	Androscoggin	367.8 ft	Good	2008
Bridge ST over E Channel Kennebec River	Kennebec	367.5 ft	Good	2003
Water ST over M.c.rr	Kennebec	360.9 ft	Fair	1935
I-495 (wb) over Presumscot Riv/falmouth	Cumberland	359.9 ft	Fair	1956
1-495 (eb) over Presumpscot River / Fs	Cumberland	359.9 ft	Fair	1956
Island Avenue over Penobscot River Overflow	Penobscot	358.9 ft	Poor	1902
Unnamed 2457 over I-95 NB & SB	Penobscot	356.6 ft	Fair	1962
Skyway Drive over I-95	Cumberland	356.0 ft	Fair	1998
River ST over Mill Yard	Oxford	352.7 ft	Poor	1913
Shaker RD over I-95	Cumberland	352.0 ft	Good	1956
Allen AVE Ext. over Presumpscot River	Cumberland	350.4 ft	Fair	1995
Trafton RD over Interstate 95 NB & SB	Kennebec	350.4 ft	Fair	1959
Highland Av over Meduxnekeag River	Aroostook	350.1 ft	Fair	1948
Pleasant ST over Pleasant River	Piscataquis	349.1 ft	Good	2022
Pinkham Brook RD over Androscoggin River	Androscoggin	347.4 ft	Good	2016
N.b. Ramp I-95 To over Bypass 1 + Ramp M	York	346.1 ft	Fair	1972
Ossipee Trl W over Saco River	York	345.5 ft	Fair	1978
Market ST over Saco River (e Or N Chan)	York	344.2 ft	Good	2016
Fairbanks RD over Sandy River	Franklin	342.5 ft	Fair	1988
I 295 NB over Route US 1 NB &sb	Cumberland	340.9 ft	Good	2024
Sheepscot RD over Sheepscot River	Lincoln	340.6 ft	Good	2006
Rockwood RD over East Outlet Kennbec R.	Piscataquis	340.6 ft	Fair	1990
Alexander Reed RD over I295 NB & SB	Sagadahoc	340.6 ft	Fair	1976
Beedle RD over I295 NB & SB	Sagadahoc	340.6 ft	Fair	1976
I 95 NB over Fish Stream & Bog Bk RD	Aroostook	337.9 ft	Fair	1979
Garland RD over Mile Brook	Kennebec	337.9 ft	Good	2012
Us-1 SB To Cooks over US 1 & Us1 On Ramp	Cumberland	336.0 ft	Fair	1964
Camden RD over ST George River	Knox	335.3 ft	Fair	1961
Fore River Pky over Mercy Access Rd. Grs	Cumberland	334.6 ft	Good	2005
Denmark RD over Saco River	Oxford	334.6 ft	Poor	1936
Westbrook Inter. over I-95	Cumberland	334.0 ft	Fair	2001
Plains RD over I-95	Kennebec	332.0 ft	Fair	1956
I 95 SB over Route 152 & Mcrr	Somerset	330.7 ft	Poor	1964
RTE 196 To Us-1 NB over Route Us1	Cumberland	330.1 ft	Good	1997
I-95(NB) over Mousam River	York	330.1 ft	Fair	1948
I-95(SB) over Mousam River	York	330.1 ft	Fair	1948
US 1 over York River	York	330.1 ft	Good	2004
Lovell RD over Saco River	Oxford	329.7 ft	Good	1997
New County RD over Saco River	York	329.4 ft	Fair	1997
Poland Spring Road over I-95	Androscoggin	326.1 ft	Fair	1956
I 95 SB over Fish Stream & Bog Bk RD	Aroostook	326.1 ft	Fair	1967