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
UMPQUA R & MCINTOSH SL Oregon Fair 1936 90 6,338
COOS BAY (MCCULLOUGH BR) Oregon Fair 1936 90 17,390
COOS BAY (MCCULLOUGH BR) Oregon Fair 1936 90 17,390
COOS BAY (MCCULLOUGH BR) Oregon Fair 1936 90 19,023
OWYHEE RIVER (ROME) Oregon Fair 1936 90 1,862
Molalla River Oregon Fair 1936 90 11,423
SPANISH HOLLOW CREEK Oregon Fair 1936 90 2,663
Hwy 002 Oregon Fair 1936 90 45,910
CHIMNEY CREEK(9TH XING) Oregon Fair 1936 90 1,475
CLACKAMAS RIVER Oregon Fair 1936 90 7,518
W OLALLA SLOUGH Oregon Poor 1936 90 6,800
Beaver Creek Oregon Fair 1936 90 2,713
BEAVER CREEK Oregon Fair 1936 90 4,300
NORTH UMPQUA RIVER Oregon Fair 1936 90 195
THOMAS CREEK Oregon Fair 1936 90 350
NORTH FORK NEHALEM RIVER Oregon Fair 1936 90 60
MILL CREEK Oregon Fair 1936 90 85
PINE CREEK Oregon Fair 1936 90 146
Arch Cape Creek Oregon Poor 1937 89 5,508
Jordan Creek Oregon Fair 1937 89 4,568
Grand Ave Oregon Fair 1937 89 63,778
CBRL Oregon Fair 1937 89 24,282
DEER CREEK Oregon Fair 1937 89 14,285
N. Fork Alsea River Oregon Fair 1937 89 713
S. Fork Alsea Overflow Oregon Good 1937 89 342
Necarney Creek Oregon Fair 1937 89 5,300
Short Sand Creek Oregon Fair 1937 89 5,300
N Fk Nehalem River Oregon Fair 1937 89 448
Calapooia River Oregon Fair 1937 89 3,351
West Fork Dairy Creek Oregon Fair 1937 89 6,189
WAGNER CREEK Oregon Fair 1937 89 12,804
Neahkahnie Mt. Chasm Oregon Fair 1937 89 5,743
BURNT RIVER (UNITY DAM) Oregon Fair 1937 89 152
MT SCOTT CREEK Oregon Good 1937 89 1,442
PINE CREEK Oregon Fair 1937 89 898
OWYHEE CANAL Oregon Good 1938 88 734
SARDINE CREEK Oregon Good 1938 88 2,931
North Fork Wolf Creek Oregon Fair 1938 88 8,468
Wolf Creek Oregon Fair 1938 88 6,383
South Fork Quartz Creek Oregon Fair 1938 88 6,082
Thomas Creek Oregon Fair 1938 88 1,655
Nehalem River Oregon Poor 1938 88 2,938
Lake Lytle Outlet Oregon Fair 1938 88 6,303
N FORK JOHN DAY RIVER Oregon Fair 1938 88 251
TRAIL CREEK Oregon Fair 1938 88 637
B-75 X LOMBARD AND UPRR Oregon Fair 1938 88 8,234
HILL CREEK Oregon Good 1938 88 3,562
JOHNSON CREEK Oregon Fair 1938 88 7,673
JOHNSON CREEK Oregon Fair 1938 88 3,502
GALLS CREEK Oregon Fair 1938 88 299

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.