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
PLEASANT RIVER Maine Fair 1946 80 3,823
SHEEPSCOT RIVER Maine Fair 1946 80 716
MESSALONSKEE STREAM Maine Fair 1946 80 7,219
WILSON STREAM Maine Fair 1946 80 8,650
GREELEY STR./THOMPSON L. Maine Fair 1946 80 1,723
VALLEY BROOK Maine Fair 1946 80 1,049
KENDUSKEAG STREAM Maine Fair 1946 80 2,218
NONESUCH RIVER Maine Fair 1946 80 16,250
YORK RIVER Maine Fair 1946 80 29,680
NONESUCH RIVER Maine Good 1947 79 37,280
STEVENS BROOK Maine Poor 1947 79 435
OGUNQUIT RIVER Maine Fair 1947 79 24,850
MERRILAND RIVER Maine Good 1947 79 25,580
SACO RIVER Maine Fair 1947 79 34,410
PLEASANT RIVER Maine Poor 1947 79 6,683
ECHO LAKE OUTLET Maine Fair 1947 79 2,386
E BR SEBASTICOOK RIVER Maine Fair 1947 79 950
FULLER BROOK Maine Poor 1947 79 2,150
RTE 1 Maine Fair 1947 79 7,281
ST GEORGE RIVER Maine Fair 1947 79 1,872
NEZINSCOT RIVER Maine Poor 1947 79 2,801
CARLETON STREAM Maine Fair 1947 79 1,148
JACKSON STR. (DAVIS STR. Maine Poor 1947 79 340
OTTER BROOK Maine Poor 1947 79 616
RAMP US 1 TO I-95 Maine Fair 1947 79 9,820
SPRUCE CREEK Maine Fair 1947 79 31,420
B&MRR Maine Fair 1948 78 24,850
WELLS INTERCHANGE Maine Fair 1948 78 24,850
MOUSAM RIVER Maine Fair 1948 78 25,580
KENNEBUNK RIVER Maine Fair 1948 78 27,050
B&MRR Maine Fair 1948 78 24,900
WELLS INTER. Maine Fair 1948 78 21,300
MOUSAM RIVER Maine Fair 1948 78 25,680
KENNEBUNK RIVER Maine Fair 1948 78 27,380
SACO RIVER Maine Fair 1948 78 35,170
MILL STREAM Maine Poor 1948 78 84
GOOSE FARE CREEK Maine Poor 1948 78 2,930
SACO RIVER Maine Poor 1948 78 8,158
ROYAL RIVER Maine Fair 1948 78 6,729
THREE BROOK STREAM Maine Fair 1948 78 5,030
MERRILAND RIVER Maine Fair 1948 78 2,460
MEDUXNEKEAG RIVER Maine Fair 1948 78 4,811
PISCATAQUIS RIVER Maine Fair 1948 78 360
MADAGASCAL STREAM Maine Fair 1948 78 436
LITTLE ANDROSCOGGIN RI Maine Fair 1948 78 14,062
REEDS BRK/GRAHAM LAKE IN Maine Poor 1948 78 2,328
PRESTILE STREAM Maine Poor 1948 78 380
MATTANAWCOOK STREAM Maine Fair 1948 78 5,002
ST. GEORGE RIVER Maine Fair 1948 78 583
TEMPLE STREAM Maine Fair 1948 78 255

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.