Longest Bridges in Maine
The longest bridge in Maine is the Casco Bay Bridge over Fore River, at 0.9 miles (4,748 ft) of total structure length. The table below ranks the longest bridges in Maine by structure length.
| Bridge | County | Length | Year Built | Daily Traffic |
|---|---|---|---|---|
| Casco Bay Bridge over Fore River | Cumberland | 4,748 ft (0.9 mi) | 1998 | 14,893 |
| I 95 over Piscataqua River RTE 103 | York | 4,000 ft (0.8 mi) | 1971 | 40,420 |
| Leeman HWY over Kennebec River | Sagadahoc | 2,981 ft (0.6 mi) | 2000 | 23,982 |
| US 1 Byp over Piscataqua River & Roads | York | 2,785 ft (0.5 mi) | 2018 | 14,040 |
| Route 1 over Sheepscot River | Lincoln | 2,729 ft (0.5 mi) | 1983 | 17,897 |
| Little Deer Isle R over Eggemoggin Reach | Hancock | 2,504 ft (0.5 mi) | 1939 | 4,800 |
| Route 1 over Penobscot River(s Chan) | Waldo | 2,125 ft (0.4 mi) | 2007 | 4,292 |
| Memorial DR over Kennebec River + Mcrr | Kennebec | 2,098 ft (0.4 mi) | 1949 | 20,252 |
| Carter Memorial DR over Kennebec R H2o ST & Rr | Kennebec | 2,027 ft (0.4 mi) | 1997 | 11,790 |
| Gilman RD over Casco Bay | Cumberland | 2,000 ft (0.4 mi) | 1955 | 2,240 |
| Bridge Street over ST John River | Aroostook | 1,842 ft (0.3 mi) | 2024 | 1,331 |
| Searsport Av over Passagassawaukeag + Rr | Waldo | 1,630 ft (0.3 mi) | 1963 | 18,553 |
| Veterans Brg Rt1 over Fore River | Cumberland | 1,609 ft (0.3 mi) | 2012 | 9,869 |
| I 395 over Penobscot Rv & S Main ST | Penobscot | 1,562 ft (0.3 mi) | 1986 | 16,550 |
| Patterson RD over Kennebec River | Lincoln | 1,480 ft (0.3 mi) | 2014 | 3,105 |
| Union ST over Broad ST | Penobscot | 1,411 ft (0.3 mi) | 1955 | 14,431 |
| Route 1 over Presumpscot*river | Cumberland | 1,402 ft (0.3 mi) | 2014 | 12,680 |
| I 95 over Eliot RD | York | 1,344 ft (0.3 mi) | 1972 | 41,190 |
| Leeman HWY over Middle ST | Sagadahoc | 1,285 ft (0.2 mi) | 2017 | 17,095 |
| Harpswell Island R over Wills Strait (atl Ocean) | Cumberland | 1,166 ft (0.2 mi) | 1926 | 2,038 |
| River RD over Penobscot Rv | Penobscot | 1,122 ft (0.2 mi) | 1971 | 5,310 |
| Alfond Connector over Kennebec River | Kennebec | 1,108 ft (0.2 mi) | 2005 | 14,820 |
| Route 196 over Androscoggin River | Cumberland | 1,085 ft (0.2 mi) | 1997 | 22,360 |
| Bridge ST over Moosabec Reach | Washington | 1,074 ft (0.2 mi) | 2020 | 1,925 |
| I 95 NB over Main RD & Penobscot R. | Penobscot | 1,065 ft (0.2 mi) | 1966 | 3,160 |
| I 95 SB over Main RD & Penobscot R. | Penobscot | 1,055 ft (0.2 mi) | 1966 | 3,270 |
| I 95 SB over Kennebec River | Kennebec | 1,040 ft (0.2 mi) | 1964 | 10,550 |
| I 95 SB over Quarry RD | Kennebec | 1,023 ft (0.2 mi) | 1960 | 17,030 |
| I 95 NB over Quarry RD | Kennebec | 1,023 ft (0.2 mi) | 1960 | 15,870 |
| Route 1 over Taunton River | Hancock | 1,022 ft (0.2 mi) | 1999 | 7,522 |
| State HWY 27 over Kennebec River + Mcrr | Kennebec | 996 ft (0.2 mi) | 1980 | 10,176 |
| I 95 NB over Kennebec River | Kennebec | 944 ft (0.2 mi) | 1964 | 9,750 |
| Bridge RD over Penobscot River | Penobscot | 937 ft (0.2 mi) | 2017 | 5,033 |
| Fort ST over River Rr & Street | Aroostook | 905 ft (0.2 mi) | 1952 | 2,790 |
| One ST over Piscataqua River Nh Road | York | 896 ft (0.2 mi) | 2013 | 7,749 |
| Washington ST over Lubec Narrows | Washington | 878 ft (0.2 mi) | 1962 | 992 |
| Dickey RD over Saint John River | Aroostook | 862 ft (0.2 mi) | 1994 | 370 |
| I-95 (nb) over Androscoggin River | Androscoggin | 845 ft (0.2 mi) | 1956 | 8,920 |
| I-95(SB) over Androscoggin River | Androscoggin | 845 ft (0.2 mi) | 1956 | 9,180 |
| Arrowsic RD over Sasonoa River | Sagadahoc | 837 ft (0.2 mi) | 1950 | 3,280 |
| I-295 Northbound over Androscoggin River | Cumberland | 831 ft (0.2 mi) | 1971 | 16,310 |
| I 295 SB over Androscoggin River | Cumberland | 825 ft (0.2 mi) | 1971 | 15,640 |
| Penob River Br over Penobscot R & Rr Yard | Penobscot | 815 ft (0.2 mi) | 1997 | 24,636 |
| Main ST over Androscoggin River | Cumberland | 802 ft (0.2 mi) | 1931 | 16,790 |
| Limestone RD over Aroostook Riv Abandd Rr | Aroostook | 801 ft (0.2 mi) | 1956 | 3,620 |
| Canaan RD over Sibley Pond | Somerset | 793 ft (0.2 mi) | 2011 | 3,842 |
| Portland ST over Androscoggin R. W Chanel | Oxford | 748 ft (0.1 mi) | 1929 | 3,509 |
| Border Crsg over Saint John River | Aroostook | 736 ft (0.1 mi) | 2014 | 920 |
| Bridge ST over Saint John River | Aroostook | 731 ft (0.1 mi) | 1972 | 330 |
| Gray RD over Mcrr & Presumpscot River | Cumberland | 729 ft (0.1 mi) | 2011 | 12,130 |
| Route 1 over Penobscot Riv (e Chan) | Hancock | 724 ft (0.1 mi) | 1988 | 10,092 |
| Broad ST over Androscoggin River | Androscoggin | 723 ft (0.1 mi) | 1936 | 12,578 |
| Poplar ST over Mud Pond Inlet | Penobscot | 705 ft (0.1 mi) | 1933 | 1,153 |
| Rim RD over Machias River | Washington | 701 ft (0.1 mi) | 1972 | 1,250 |
| Mountain RD over Ewing Narrows | Cumberland | 680 ft (0.1 mi) | 1974 | 2,280 |
| Main RD over Cowsweag Narrows | Lincoln | 680 ft (0.1 mi) | 1974 | 1,490 |
| Canaan RD over Kennebec River | Kennebec | 646 ft (0.1 mi) | 1983 | 3,593 |
| I-95 (nb) over Washington ST & Mcrr | Androscoggin | 640 ft (0.1 mi) | 1956 | 8,920 |
| I-95 (sb) over Washington ST & Mcrr | Androscoggin | 640 ft (0.1 mi) | 2012 | 9,180 |
| Main ST over M C Rr & A Marsh | Sagadahoc | 626 ft (0.1 mi) | 2024 | 18,940 |
| I-95 (nb) over Saco River | York | 620 ft (0.1 mi) | 1947 | 34,410 |
| I-95(SB) over Saco River | York | 620 ft (0.1 mi) | 1948 | 35,170 |
| Bridge RD over Penobscot River | Penobscot | 608 ft (0.1 mi) | 1950 | 905 |
| N Main ST over Androscoggin River | Oxford | 607 ft (0.1 mi) | 2018 | 6,430 |
| Trestle Road over Piscataquis River | Piscataquis | 606 ft (0.1 mi) | 1907 | 103 |
| Buxton Road over Saco River | York | 606 ft (0.1 mi) | 1936 | 4,526 |
| I 295 NB over Fore River | Cumberland | 605 ft (0.1 mi) | 1973 | 36,530 |
| I 295 SB over Fore River | Cumberland | 605 ft (0.1 mi) | 1973 | 35,840 |
| Court ST over Androscoggin River | Androscoggin | 602 ft (0.1 mi) | 1983 | 33,048 |
| Riley RD over Androscoggin River | Franklin | 602 ft (0.1 mi) | 1966 | 4,890 |
| Mutton LN over Interstate 95 SB | Kennebec | 600 ft (0.1 mi) | 1964 | 1,116 |
| I-95 (sb) over York River | York | 591 ft (0.1 mi) | 1946 | 30,330 |
| I- 95 (nb) over York River | York | 591 ft (0.1 mi) | 1946 | 29,680 |
| Coffin ST over Piscataquis River | Penobscot | 589 ft (0.1 mi) | 2012 | 3,044 |
| Bridge ST over Kennebec River | Somerset | 574 ft (0.1 mi) | 2011 | 5,884 |
| Spring ST over Kennebec River | Kennebec | 574 ft (0.1 mi) | 1936 | 8,829 |
| International Av over St. Croix River | Washington | 565 ft (0.1 mi) | 2009 | 964 |
| Moosehead Trl over Interstate 95 NB & SB | Penobscot | 545 ft (0.1 mi) | 1962 | 1,980 |
| Barters Island RD over Back River (tidal Pass) | Lincoln | 544 ft (0.1 mi) | 2011 | 1,660 |
| Medway RD over East Branch Penobscot Rv | Penobscot | 540 ft (0.1 mi) | 1999 | 5,279 |
| I 95 SB over Piscataquis R. | Penobscot | 536 ft (0.1 mi) | 1966 | 4,120 |
| I 95 NB over Piscataquis River | Penobscot | 535 ft (0.1 mi) | 1975 | 3,880 |
| IRR BIA RTE 201 over Penobscot River | Penobscot | 531 ft (0.1 mi) | 1985 | 2,800 |
| Snakeroot RD over Interstate 95 NB & SB | Somerset | 525 ft (0.1 mi) | 1964 | 200 |
| Ferry ST over Kennebec River | Somerset | 522 ft (0.1 mi) | 1955 | 1,976 |
| ST RTE 232 over Androscoggin River | Oxford | 516 ft (0.1 mi) | 2015 | 1,517 |
| Route 1 over 295/nb Ramp 295 To 1/ptr | Cumberland | 515 ft (0.1 mi) | 1974 | 4,280 |
| Lilac LN over York River | York | 514 ft (0.1 mi) | 2010 | 2,483 |
| Bennoch RD over I-95 NB & SB | Penobscot | 512 ft (0.1 mi) | 1965 | 2,494 |
| I 295 NB over Back Bay (atlantic O) | Cumberland | 507 ft (0.1 mi) | 1960 | 42,190 |
| Vietnam Vet Connec over W Chan Andro R & River R | Androscoggin | 504 ft (0.1 mi) | 1973 | 15,503 |
| One ST over Piscataqua River | York | 503 ft (0.1 mi) | 1938 | 10,523 |
| School ST over Androscoggin River | Oxford | 503 ft (0.1 mi) | 2005 | 1,734 |
| Dover-eliot RD over Salmon Falls River | York | 494 ft (0.1 mi) | 1969 | 5,800 |
| Main ST over Saco River | York | 488 ft (0.1 mi) | 2016 | 4,031 |
| Tuttle Road over I-295 RTE US 1 & M C Rr | Cumberland | 488 ft (0.1 mi) | 1958 | 3,497 |
| Route 1 over Damariscotta River | Lincoln | 487 ft (0.1 mi) | 1961 | 9,650 |
| Center Bridge RD over Androscoggin River | Androscoggin | 487 ft (0.1 mi) | 2014 | 2,631 |
| Bellsqueeze RD over I-95 NB & SB | Kennebec | 483 ft (0.1 mi) | 1964 | 750 |
| US 1 NB over I295 & Wash AVE NB & SB | Cumberland | 479 ft (0.1 mi) | 1987 | 3,000 |
| Main ST over Kennebec R | Somerset | 468 ft (0.1 mi) | 1974 | 7,854 |
| Main ST over Aroostook River | Aroostook | 464 ft (0.1 mi) | 1982 | 11,336 |
| Belvedere RD over Interstate 95 NB & SB | Aroostook | 461 ft (0.1 mi) | 1967 | 160 |
| Bridge ST over Kennebec River | Somerset | 461 ft (0.1 mi) | 1986 | 833 |
| Mercer RD over Sandy River | Franklin | 460 ft (0.1 mi) | 1958 | 8,124 |
| Old Town RD over I-95 NB & SB | Penobscot | 460 ft (0.1 mi) | 1965 | 3,057 |
| Veterans Memorial over Androscoggin River | Androscoggin | 455 ft (0.1 mi) | 1973 | 16,697 |
| Castle Hill RD over Aroostook River | Aroostook | 455 ft (0.1 mi) | 1971 | 1,320 |
| Main ST over Stillwater River | Penobscot | 454 ft (0.1 mi) | 1949 | 15,860 |
| Lincoln Access over I-95 (nb & Sb) | Penobscot | 454 ft (0.1 mi) | 1966 | 2,663 |
| Hogan RD over Interstate 95 NB & SB | Penobscot | 453 ft (0.1 mi) | 1960 | 8,606 |
| Casey RD over Interstate 95 | Aroostook | 451 ft (0.1 mi) | 1967 | 124 |
| Johnson Flat RD over Interstate 95 NB & SB | Somerset | 440 ft (0.1 mi) | 1964 | 430 |
| I-95 (nb) over Lisbon St/rte 196 & Mcrr | Androscoggin | 439 ft (0.1 mi) | 1956 | 5,980 |
| I-95(SB) over Lisbon St/rte 196 & Mcrr | Androscoggin | 439 ft (0.1 mi) | 1956 | 6,280 |
| Cow Team RD over Interstate 95 NB & SB | Aroostook | 437 ft (0.1 mi) | 1967 | 50 |
| Carmel RD N over I-95 NB & SB | Penobscot | 437 ft (0.1 mi) | 1963 | 3,043 |
| US 1 over B & A Rr | Aroostook | 436 ft (0.1 mi) | 1971 | 6,810 |
| Precourt ST over B & M Rr | York | 436 ft (0.1 mi) | 1989 | 15,900 |
| Cummings (spring) over I-95 | Cumberland | 433 ft (0.1 mi) | 2019 | 13,480 |
| I 95 over Kenduskeag Str&valley Av | Penobscot | 430 ft (0.1 mi) | 1960 | 25,340 |
| Veterans ST over Androscoggin River | Oxford | 426 ft (0.1 mi) | 2000 | 6,182 |
| Bridge ST over Kennebec River | Kennebec | 425 ft (0.1 mi) | 1972 | 13,867 |
| Pattagumpus RD over W Br Penobscot River | Penobscot | 422 ft (0.1 mi) | 2008 | 1,363 |
| Wash Av SB over I295nb&sb&marginal Way | Cumberland | 419 ft (0.1 mi) | 1990 | 7,110 |
| Us-1 NB To RTE 196 over Ramp B | Cumberland | 419 ft (0.1 mi) | 1997 | 1,404 |
| Hill RD over Interstate 95 NB | Kennebec | 419 ft (0.1 mi) | 1964 | 1,628 |
| Veterans Bridge over I295 & NB Us1 To 295 NB | Cumberland | 418 ft (0.1 mi) | 1974 | 11,240 |
| US 1 SB over Maine Central Rr | Sagadahoc | 417 ft (0.1 mi) | 1966 | 17,833 |
| I-95 SB over Bond Brook & Bond Bk RD | Kennebec | 415 ft (0.1 mi) | 1959 | 18,790 |
| I-95 Northbound over Bond Brook & Bond Bk RD | Kennebec | 412 ft (0.1 mi) | 1959 | 18,290 |
| Crystal RD over Interstate 95 NB & SB | Aroostook | 410 ft (0.1 mi) | 1967 | 1,415 |
| I-295 SB over I-95 | Cumberland | 410 ft (0.1 mi) | 1972 | 14,770 |
| Bridge ST over Androscoggin River | Androscoggin | 409 ft (0.1 mi) | 1959 | 6,291 |
| Mayville RD over Androscoggin River | Oxford | 408 ft (0.1 mi) | 1968 | 9,113 |
| Center ST over E Channel-penobscot Rv | Penobscot | 408 ft (0.1 mi) | 2007 | 13,523 |
| Lagrange RD over I-95 NB & SB | Penobscot | 408 ft (0.1 mi) | 1965 | 2,967 |
| Five Islands RD over Back River | Sagadahoc | 407 ft (0.1 mi) | 2009 | 2,330 |
| Water ST over Pleasant River | Washington | 405 ft (0.1 mi) | 1981 | 1,304 |
| Dickey RD over Allagash River | Aroostook | 405 ft (0.1 mi) | 1992 | 690 |
| Main ST over Mattawamkeag River | Penobscot | 404 ft (0.1 mi) | 2023 | 2,081 |
| I-295 SB Underpass over I-95 | Kennebec | 402 ft (0.1 mi) | 1972 | 11,840 |
| W Etna RD over I-95 NB & SB | Penobscot | 400 ft (0.1 mi) | 1962 | 246 |
| Falmouth Spur Intr over I-95 | Cumberland | 397 ft (0.1 mi) | 1956 | 1,260 |
| Bridge ST over C Channel Kennebec River | Somerset | 389 ft (0.1 mi) | 2003 | 13,237 |
| Poplar ST over W Branch Penobscot River | Penobscot | 388 ft (0.1 mi) | 2023 | 851 |
| Cook RD over Interstate 95 NB & SB | Penobscot | 386 ft (0.1 mi) | 1963 | 532 |
| Route 1 over Cod Cove | Lincoln | 385 ft (0.1 mi) | 1958 | 17,204 |
| Main ST over ST Croix River | Washington | 382 ft (0.1 mi) | 1957 | 2,560 |
| Portland RD over B & M Rr | York | 382 ft (0.1 mi) | 1937 | 14,512 |
| Wilton RD over Sandy River | Franklin | 380 ft (0.1 mi) | 1991 | 18,204 |
| Station ST over Aroostook River | Aroostook | 379 ft (0.1 mi) | 1980 | 3,210 |
| Old Bath Road over US 1 NB & SB | Cumberland | 378 ft (0.1 mi) | 1964 | 5,553 |
| US 202 over Mcrr & Ramps To 41 & 133 | Kennebec | 376 ft (0.1 mi) | 1955 | 11,093 |
| Riley RD over Androscoggin River | Franklin | 371 ft (0.1 mi) | 1966 | 4,890 |
| Bay ST over Sebasticook River | Kennebec | 371 ft (0.1 mi) | 1960 | 16,604 |
| Hendricks Hill RD over Townsend Gut/atlantic O | Lincoln | 369 ft (0.1 mi) | 1939 | 3,430 |
| Payne Road over I-95 | Cumberland | 368 ft (0.1 mi) | 2005 | 7,626 |
| Dinsmore RD over Interstate I-95 NB & SB | Kennebec | 368 ft (0.1 mi) | 1958 | 586 |
| Howes Corner RD over West Chann Androscoggin | Androscoggin | 367 ft (0.1 mi) | 2008 | 3,461 |
| Bridge ST over E Channel Kennebec River | Kennebec | 367 ft (0.1 mi) | 2003 | 13,058 |
| Water ST over M.c.rr | Kennebec | 360 ft (0.1 mi) | 1935 | 13,952 |
| I-495 (wb) over Presumscot Riv/falmouth | Cumberland | 359 ft (0.1 mi) | 1956 | 5,770 |
| 1-495 (eb) over Presumpscot River / Fs | Cumberland | 359 ft (0.1 mi) | 1956 | 7,090 |
| Island Avenue over Penobscot River Overflow | Penobscot | 358 ft (0.1 mi) | 1902 | 158 |
| Unnamed 2457 over I-95 NB & SB | Penobscot | 356 ft (0.1 mi) | 1962 | 342 |
| Skyway Drive over I-95 | Cumberland | 355 ft (0.1 mi) | 1998 | 14,199 |
| River ST over Mill Yard | Oxford | 352 ft (0.1 mi) | 1913 | 310 |
| Shaker RD over I-95 | Cumberland | 352 ft (0.1 mi) | 1956 | 6,960 |
| Allen AVE Ext. over Presumpscot River | Cumberland | 350 ft (0.1 mi) | 1995 | 6,420 |
| Trafton RD over Interstate 95 NB & SB | Kennebec | 350 ft (0.1 mi) | 1959 | 472 |
| Highland Av over Meduxnekeag River | Aroostook | 350 ft (0.1 mi) | 1948 | 4,811 |
| Pleasant ST over Pleasant River | Piscataquis | 349 ft (0.1 mi) | 2022 | 1,015 |
| Pinkham Brook RD over Androscoggin River | Androscoggin | 347 ft (0.1 mi) | 2016 | 5,085 |
| N.b. Ramp I-95 To over Bypass 1 + Ramp M | York | 346 ft (0.1 mi) | 1972 | 5,420 |
| Ossipee Trl W over Saco River | York | 345 ft (0.1 mi) | 1978 | 7,918 |
| Market ST over Saco River (e Or N Chan) | York | 344 ft (0.1 mi) | 2016 | 5,532 |
| Fairbanks RD over Sandy River | Franklin | 342 ft (0.1 mi) | 1988 | 2,994 |
| I 295 NB over Route US 1 NB &sb | Cumberland | 340 ft (0.1 mi) | 2024 | 23,450 |
| Sheepscot RD over Sheepscot River | Lincoln | 340 ft (0.1 mi) | 2006 | 1,153 |
| Rockwood RD over East Outlet Kennbec R. | Piscataquis | 340 ft (0.1 mi) | 1990 | 1,030 |
| Alexander Reed RD over I295 NB & SB | Sagadahoc | 340 ft (0.1 mi) | 1976 | 451 |
| Beedle RD over I295 NB & SB | Sagadahoc | 340 ft (0.1 mi) | 1976 | 242 |
| I 95 NB over Fish Stream & Bog Bk RD | Aroostook | 337 ft (0.1 mi) | 1979 | 2,360 |
| Garland RD over Mile Brook | Kennebec | 337 ft (0.1 mi) | 2012 | 1,901 |
| Us-1 SB To Cooks over US 1 & Us1 On Ramp | Cumberland | 335 ft (0.1 mi) | 1964 | 3,653 |
| Camden RD over ST George River | Knox | 335 ft (0.1 mi) | 1961 | 5,596 |
| Fore River Pky over Mercy Access Rd. Grs | Cumberland | 334 ft (0.1 mi) | 2005 | 13,170 |
| Denmark RD over Saco River | Oxford | 334 ft (0.1 mi) | 1936 | 1,850 |
| Westbrook Inter. over I-95 | Cumberland | 333 ft (0.1 mi) | 2001 | 1,500 |
| Plains RD over I-95 | Kennebec | 332 ft (0.1 mi) | 1956 | 792 |
| I 95 SB over Route 152 & Mcrr | Somerset | 330 ft (0.1 mi) | 1964 | 8,970 |
| RTE 196 To Us-1 NB over Route Us1 | Cumberland | 330 ft (0.1 mi) | 1997 | 8,514 |
| I-95(NB) over Mousam River | York | 330 ft (0.1 mi) | 1948 | 25,580 |
| I-95(SB) over Mousam River | York | 330 ft (0.1 mi) | 1948 | 25,680 |
| US 1 over York River | York | 330 ft (0.1 mi) | 2004 | 9,400 |
| Lovell RD over Saco River | Oxford | 329 ft (0.1 mi) | 1997 | 4,427 |
| New County RD over Saco River | York | 329 ft (0.1 mi) | 1997 | 5,530 |
| Poland Spring Road over I-95 | Androscoggin | 326 ft (0.1 mi) | 1956 | 2,567 |
| I 95 SB over Fish Stream & Bog Bk RD | Aroostook | 326 ft (0.1 mi) | 1967 | 2,590 |