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
Willamette Rr/UPRR & P&W Oregon Fair 1931 95 23,537
Private Driveway Oregon Fair 1931 95 14,210
Canyon Crk Oregon Fair 1932 94 3,276
WILLAMETTE RIVER Oregon Fair 1932 94 525
Southworth Creek Oregon Good 1932 94 1,683
Arnold Creek Oregon Fair 1932 94 1,476
PARADISE CREEK Oregon Fair 1932 94 3,554
Sager Creek Oregon Good 1932 94 273
Farmer River Oregon Fair 1932 94 4,358
CREEK Oregon Poor 1932 94 3,445
CREEK Oregon Fair 1932 94 3,470
CREEK Oregon Fair 1932 94 3,470
CREEK Oregon Fair 1932 94 3,894
CREEK Oregon Fair 1932 94 3,894
CREEK Oregon Fair 1932 94 3,894
Beaver Creek Oregon Fair 1932 94 2,642
CASTLE CREEK Oregon Fair 1932 94 1,001
BYBEE CREEK Oregon Fair 1932 94 953
Boulder Creek Oregon Fair 1932 94 3,723
ABERNETHY CREEK Oregon Fair 1932 94 16,500
DEADWOOD CREEK Oregon Fair 1932 94 15
COW HOLLOW DRAIN Oregon Fair 1932 94 481
VALE AGENCY VALLEY DAM Oregon Good 1933 93 10
Marys River Oregon Fair 1933 93 11,781
Santiam River Oregon Fair 1933 93 8,644
CLACKAMAS RIVER Oregon Fair 1933 93 33,434
UPRR Oregon Fair 1933 93 9,694
JUNIPER PT HALF VIADUCT Oregon Fair 1933 93 3,403
KOEPKE SLOUGH Oregon Fair 1933 93 3,998
Columbia Slough Oregon Fair 1933 93 11,492
South Fork Silver Creek Oregon Fair 1933 93 656
Flat Creek Oregon Fair 1933 93 8,459
Creek Oregon Fair 1933 93 8,459
Creek Oregon Fair 1933 93 8,459
GURKIN CANYON CREEK Oregon Fair 1933 93 2,663
Austins Point Oregon Fair 1933 93 5,508
POWDER RIVER (BRIDGE ST) Oregon Fair 1933 93 2,551
ROGUE RIVER Oregon Fair 1933 93 953
MUIR CREEK Oregon Fair 1933 93 953
ABERNETHY CREEK Oregon Poor 1933 93 9,700
CALAPOOYA CREEK Oregon Fair 1933 93 588
Columbia Slough Oregon Fair 1934 92 17,168
BURNT RIVER (LIME) Oregon Fair 1934 92 50
Yaquina Bay Oregon Poor 1934 92 20,207
Yaquina Bay Oregon Good 1934 92 20,207
Yaquina Bay Oregon Fair 1934 92 17,629
East Fork Humbug Creek Oregon Fair 1934 92 6,234
South Fork Alsea River Oregon Fair 1934 92 342
Little Nestucca River Oregon Poor 1934 92 576
DESCHUTES RIVER Oregon Fair 1934 92 7,631

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.