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
E.BR.WESSERUNSET STREAM Maine Poor 1935 91 1,020
MEGUNTICOOK RIVER Maine Poor 1935 91 830
TIDAL INLET Maine Fair 1935 91 406
SEBASTICOOK RIVER Maine Poor 1935 91 3,860
SANDY RIVER Maine Fair 1935 91 219
WEBB BROOK Maine Fair 1935 91 1,073
UNION RIVER Maine Fair 1935 91 515
NEWTON BROOK Maine Fair 1935 91 1,538
MOOSEHORN CREEK Maine Poor 1935 91 1,716
LITTLE OSSIPEE RIVER Maine Fair 1935 91 460
MEGUNTICOOK RIVER Maine Poor 1935 91 1,920
S BRANCH MEDUXNEKEAG RIV Maine Poor 1936 90 60
MACHIAS RIVER (S CHAN) Maine Poor 1936 90 800
ST GEORGE RIVER Maine Fair 1936 90 1,570
LITTLE RIVER Maine Poor 1936 90 412
CROSS COVE Maine Poor 1936 90 2,861
OTTER STREAM Maine Fair 1936 90 1,722
LEARY BROOK Maine Poor 1936 90 52
ANDROSCOGGIN RIVER Maine Poor 1936 90 7,203
MILL(POLLY CLARK) CREEK Maine Fair 1936 90 1,751
KENNEBEC RIVER Maine Poor 1936 90 8,829
GILMAN STREAM Maine Fair 1936 90 243
M C RR Maine Poor 1936 90 12,879
B & A RR Maine Fair 1936 90 560
W BRANCH SHEEPSCOT RIVER Maine Fair 1936 90 1,533
B&A RR Maine Poor 1936 90 1,010
SHEEPSCOT RIVER Maine Poor 1936 90 356
WINSLOW STREAM Maine Poor 1936 90 2,051
B & A RR (NO TRACKS) Maine Fair 1936 90 3,450
E BRANCH SEBASTICOOK RIV Maine Fair 1936 90 1,866
EATON BROOK Maine Fair 1936 90 7,669
SEBASTICOOK RIVER Maine Poor 1936 90 1,218
PLEASANT RIVER Maine Poor 1936 90 168
PLEASANT RIVER Maine Poor 1936 90 84
COBBOSSEE STREAM Maine Fair 1936 90 415
ANDROSCOGGIN RIVER Maine Fair 1936 90 12,578
COBOSSEE STREAM Maine Fair 1936 90 1,512
ELLIS RIVER Maine Poor 1936 90 702
BLACK BROOK Maine Fair 1936 90 702
BOBBIN MILL BROOK Maine Fair 1936 90 496
SACO RIVER Maine Poor 1936 90 4,526
EASTERN RIVER Maine Poor 1936 90 1,550
CROOKED RIVER Maine Poor 1936 90 60
CROOKED RIVER Maine Poor 1936 90 242
MARSH STREAM Maine Fair 1936 90 420
E BRANCH NEZINSCOT RIVER Maine Fair 1936 90 1,503
TWITCHEL(MORGAN) BROOK Maine Poor 1936 90 299
TWITCHEL(MORGAN) BROOK Maine Fair 1936 90 289
LITTLE ANDROSCOGGIN RIV Maine Poor 1936 90 677
INDIAN STREAM Maine Fair 1936 90 1,202

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.