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Historic Bridges in Maine

630 bridges built before 1951 in Maine still in service today.

Bridges Built Before 1951

The United States has 630 bridges in Maine built before 1951 that remain in active service. These structures are 75+ years old — many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.

Clear
Bridge State Condition Year Built Age (Years) ADT
BOND BROOK Maine Poor 1854 172 8,861
OLD COURSE OF SACO RIVER Maine Fair 1857 169 50
ELLIS RIVER Maine Fair 1868 158 259
KENDUSKEAG STREAM Maine Fair 1876 150 72
CARRABASSET RIVER Maine Fair 1886 140 74
GREAT WORKS RIVER Maine Poor 1891 135 1,170
LITTLE OSSIPEE RIVER Maine Fair 1892 134 40
PTRR (ABANDONED) Maine Fair 1900 126 577
MAGALLOWAY RIVER Maine Fair 1901 125 42
MOUSAM RIVER Maine Fair 1901 125 6,840
PENNAMAQUAN RIVER Maine Fair 1901 125 515
SOKOKIS LAKE OUTLET Maine Fair 1901 125 3,786
PENOBSCOT RIVER OVERFLOW Maine Poor 1902 124 177
PENOBSCOT RIVER OVERFLOW Maine Poor 1902 124 158
EAST MACHIAS RIVER Maine Fair 1902 124 2,979
WEBB RIVER Maine Fair 1904 122 117
VAUGHAN STREAM Maine Fair 1905 121 1,480
PISCATAQUIS RIVER Maine Poor 1907 119 103
MIDDLE BR MOUSAM RIVER Maine Fair 1907 119 613
PISCATAQUA RIVER Maine Poor 1909 117 284
MAINE CENTRL RAILROAD Maine Fair 1911 115 1,280
MILE BROOK Maine Poor 1911 115 622
CROOKED RIVER Maine Fair 1912 114 240
BIG BRK Maine Fair 1912 114 73
PISCATAQUIS RIVER Maine Poor 1912 114 10,496
MOOSE POND OUTLET Maine Fair 1912 114 1,614
SABBATUS RIVER Maine Poor 1913 113 2,812
MILL YARD Maine Poor 1913 113 310
SWAIN (BEAN) BROOK Maine Fair 1914 112 9,742
SEBEC RIVER Maine Poor 1915 111 6,037
SEBEC RIVER Maine Poor 1915 111 6,037
AUSTIN STREAM OVERFLOW Maine Poor 1916 110 20
STROUDWATER RIVER Maine Fair 1916 110 11,740
CARRABASSET RIVER Maine Poor 1916 110 2,515
TOWN FARM BROOK Maine Poor 1917 109 2,844
BOWLEY BROOK Maine Fair 1917 109 629
HUNTER BROOK Maine Fair 1918 108 1,480
SEVEN MILE STREAM Maine Poor 1918 108 151
PUMP BOX BROOK Maine Poor 1918 108 1,900
EAST STREAM Maine Fair 1919 107 2,211
MACWAHOC STREAM Maine Poor 1919 107 220
CHANDLER BROOK Maine Fair 1920 106 203
MOUSAM RIVER Maine Fair 1920 106 8,420
PLEASANT RIVER Maine Poor 1920 106 589
MILL BROOK Maine Poor 1920 106 3,172
ST GEORGE RIVER Maine Fair 1920 106 870
CATHANCE RIVER Maine Poor 1920 106 1,089
B&M RAILROAD Maine Good 1920 106 580
PATTEE POND BROOK Maine Poor 1921 105 1,075
PENNESSEEWASSEE STREAM Maine Poor 1921 105 352

About Historic Bridge Data

Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.

All Bridges Poor Condition Scour Critical Bridge Stats