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
Lebanon Ditch Oregon Poor 1921 105 18,798
Blackhorse Creek Oregon Fair 1921 105 1,546
INDIAN CREEK Oregon Fair 1921 105 8,331
REESE CREEK Oregon Fair 1921 105 8,367
DRY CREEK (GLOVER) Oregon Fair 1921 105 60
FIVE POINTS CRK Oregon Fair 1921 105 32
Hinton Creek Oregon Fair 1921 105 2,909
WILLOW CREEK Oregon Fair 1921 105 927
Belt Line Oregon Fair 1921 105 7,781
N Fork Klaskanine River Oregon Fair 1921 105 453
WOLF CREEK Oregon Fair 1921 105 201
SUTHERLIN CREEK Oregon Fair 1921 105 6,589
COOPER CREEK Oregon Fair 1921 105 6,857
SUTHERLIN CREEK Oregon Fair 1921 105 3,817
LOST CREEK Oregon Fair 1921 105 371
DEER CREEK Oregon Fair 1921 105 393
FURNISH DITCH Oregon Good 1921 105 281
FURNISH DITCH Oregon Fair 1921 105 157
FURNISH DITCH Oregon Fair 1921 105 168
FURNISH DITCH Oregon Fair 1921 105 135
FURNISH DITCH Oregon Fair 1921 105 168
TUALATIN RIVER Oregon Fair 1921 105 576
WILLAMETTE RIVER Oregon Fair 1922 104 14,550
Ash Swale Oregon Fair 1922 104 5,468
Ash Swale Oregon Fair 1922 104 8,637
UPRR Oregon Poor 1922 104 222
UPRR Oregon Fair 1922 104 156
Lake Creek Oregon Fair 1922 104 3,351
LITTLE CREEK (UNION) Oregon Fair 1922 104 2,496
WEST FORK BIRCH CREEK Oregon Good 1922 104 604
Clear Creek Oregon Fair 1922 104 3,496
Big Rack Heap Creek Oregon Fair 1922 104 492
EIGHTMILE CREEK Oregon Fair 1922 104 75
EIGHTMILE CREEK Oregon Fair 1922 104 75
EIGHTMILE CREEK Oregon Fair 1922 104 75
Pudding R. Relief Chan. Oregon Fair 1922 104 8,230
Pudding River Oregon Fair 1922 104 15,402
DEER CREEK Oregon Fair 1922 104 16
BILGER CREEK Oregon Fair 1922 104 2,358
SOUTH UMPQUA RIVER Oregon Fair 1922 104 11,004
B-14 OVER CANYON Oregon Fair 1922 104 137
COYOTE CREEK Oregon Fair 1922 104 273
NORTH FORK ASH CREEK Oregon Fair 1922 104 3,329
FURNISH DITCH Oregon Fair 1922 104 281
INDIAN CREEK Oregon Poor 1922 104 27
Yaquina River Oregon Fair 1923 103 6,611
Dairy Creek Oregon Fair 1923 103 28,179
HAY CREEK Oregon Fair 1923 103 2,116
Baskett Slough Oregon Fair 1923 103 12,985
NORTH UMPQUA RIVER Oregon Fair 1923 103 7,974

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.