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
ST. GEORGE RIVER Maine Fair 1930 96 683
MCRR BRANCH Maine Poor 1930 96 3,700
WAPSACONHAGAN Maine Fair 1930 96 1,936
ANDROSCOGGIN RIVER Maine Poor 1931 95 16,790
MILL CREEK Maine Fair 1931 95 5,457
MILL CANAL Maine Poor 1931 95 7,854
SEBEC RIVER Maine Poor 1931 95 6,037
CARLTON (TROUT) BROOK Maine Fair 1931 95 987
COLD STREAM Maine Fair 1931 95 4,271
MILL POND STREAM Maine Fair 1931 95 4,921
KENDUSKEAG STREAM Maine Fair 1931 95 4,257
WHITTEN STREAM (NORTH) Maine Poor 1931 95 1,867
E BR WESSERUNSETT STREAM Maine Fair 1931 95 2,336
HARRINGTON RIVER Maine Poor 1931 95 421
MEGUNTICOOK RIVER Maine Poor 1931 95 11,473
SEBASTICOOK RIVER Maine Fair 1931 95 4,286
MARSH BROOK Maine Fair 1931 95 3,767
15 MILE STREAM Maine Poor 1931 95 143
McGurdy Stream Maine Poor 1931 95 1,038
MEDOMAK RIVER Maine Fair 1931 95 4,890
MONTSWEAG BROOK Maine Fair 1931 95 16,559
SWIFT RIVER Maine Poor 1931 95 423
WEBB RIVER Maine Fair 1931 95 1,228
LOVEJOY POND OUTLET Maine Fair 1931 95 540
W BR MATTAWAMKEAG RIVER Maine Fair 1931 95 200
E BRANCH PISCATAQUIS R Maine Poor 1931 95 308
PISCATAQUIS RIVER Maine Fair 1931 95 543
VALLEY BRK Maine Fair 1931 95 2,325
KENDUSKEAG STREAM Maine Fair 1931 95 4,257
MAINE CENTRAL RAILROAD Maine Fair 1932 94 2,507
DAVIS STREAM Maine Fair 1932 94 4,410
COOKS BROOK Maine Fair 1932 94 4,258
LITTLE RIVER Maine Fair 1932 94 15,590
KENNEBUNK RIVER Maine Poor 1932 94 4,490
PHELPS BROOK Maine Fair 1932 94 134
LITTLE ANDROSCOGGIN Maine Fair 1932 94 10,953
JOHNSON BROOK Maine Poor 1932 94 2,161
MESSALONSKEE STR Maine Fair 1932 94 1,968
MATTANAWCOOK STREAM Maine Fair 1932 94 11,531
MOLUNKUS STREAM Maine Poor 1932 94 802
BEAR RIVER Maine Fair 1932 94 846
CARRABASSET RIVER Maine Fair 1932 94 4,581
SUCKER MILL POND Maine Fair 1932 94 735
WEBSTER MILL POND Maine Poor 1932 94 2,080
LITTLE ANDROSCOGGIN Maine Fair 1932 94 7,792
PASSAGASSAWAUKEAG RV Maine Fair 1932 94 4,612
WYTOPITLOCK STREAM Maine Fair 1932 94 384
COLD RIVER Maine Poor 1932 94 240
MEDOMAK RIVER Maine Fair 1932 94 13,870
MICHAEL BROOK Maine Poor 1932 94 200

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.