Historic Bridges in Oregon

790 bridges built before 1951 in Oregon still in service today.

Bridges Built Before 1951

The United States has 790 bridges in Oregon 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
Drift Creek Oregon Fair 1945 81 13,759
OCHOCO N MAIN CANAL Oregon Fair 1945 81 11,484
N UNIT OCHOCO MAIN CANAL Oregon Fair 1945 81 2,001
UPRR Conn Rt Oregon Fair 1945 81 14,242
SOUTH SANTIAM RIVER Oregon Fair 1945 81 158
ALSEA RIVER Oregon Poor 1945 81 102
N.MIDDLE FORK WILLAMETTE Oregon Fair 1945 81 38
MAYS CREEK Oregon Poor 1945 81 152
ANTELOPE CREEK Oregon Fair 1945 81 86
South Yamhill River Oregon Fair 1946 80 16,482
Siletz River Oregon Fair 1946 80 680
Mill Creek Oregon Fair 1946 80 11,358
PNWR & VADIS Oregon Fair 1946 80 11,858
Horsetail & Oneonta Ck Oregon Fair 1946 80 27,375
JACK CREEK Oregon Poor 1946 80 40
HWY 422 Oregon Fair 1946 80 6,383
WB HWY 26 Oregon Fair 1946 80 18,583
Conn 2 Jordan Rd Oregon Fair 1946 80 15,340
Conn 2 Jordan Rd Oregon Good 1946 80 15,340
MILL CREEK Oregon Fair 1946 80 596
Bledsoe Creek Oregon Fair 1946 80 11,858
ADAMS CREEK Oregon Fair 1946 80 508
SOUTH UMPQUA RIVER Oregon Poor 1946 80 4,541
SANTIAM-ALBANY CANAL Oregon Fair 1946 80 5,665
Wilson River Oregon Fair 1947 79 4,854
GOOSE CREEK Oregon Good 1947 79 610
FLAT CREEK Oregon Fair 1947 79 18,004
ARTHUR STREET Oregon Fair 1947 79 18,583
ARTHUR ST VIADUCT Oregon Poor 1947 79 8,710
BUCK HOLLOW CREEK Oregon Fair 1947 79 115
METOLIUS RIVER Oregon Fair 1947 79 46
S.FK. COQUILLE RIVER Oregon Fair 1947 79 50
PEAVINE CREEK Oregon Fair 1947 79 40
BUTTE CREEK Oregon Fair 1947 79 11,400
Truax Creek Oregon Fair 1947 79 66,382
LITTLE BUTTE CREEK Oregon Poor 1947 79 5,681
TROUT CRK (2ND XING) Oregon Fair 1947 79 475
TROUT CRK (3RD XING) Oregon Fair 1947 79 475
IRRIGATION CANAL Oregon Fair 1947 79 500
Lebanon Ditch Oregon Fair 1947 79 8,275
Partial Viaduct Oregon Fair 1947 79 4,907
NORTH UNIT CANAL Oregon Fair 1947 79 603
FOSTER CREEK Oregon Good 1947 79 89
CATCHING CREEK Oregon Fair 1947 79 486
B-58 OVER JOHNSON CREEK Oregon Good 1947 79 2,752
IRRIGATION CANAL Oregon Fair 1947 79 144
IRRIGATION CANAL Oregon Fair 1947 79 35
B-89 OVER JOHNSON CREEK Oregon Good 1947 79 7,011
SALMON RIVER Oregon Fair 1947 79 1,929
MIDDLE FK COQUILLE RIVER Oregon Fair 1948 78 3,518

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.