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.
| Bridge | State | Condition | Year Built | Age (Years) | ADT |
|---|---|---|---|---|---|
| Berry Creek | Oregon | Fair | 1923 | 103 | 8,275 |
| Soap Creek | Oregon | Fair | 1923 | 103 | 8,275 |
| EIGHTMILE CREEK | Oregon | Fair | 1923 | 103 | 75 |
| BEAR CREEK | Oregon | Fair | 1923 | 103 | 490 |
| MCKAY CREEK | Oregon | Fair | 1923 | 103 | 298 |
| GRANDE RONDE R AND UPRR | Oregon | Good | 1924 | 102 | 9 |
| Lewis & Clark River | Oregon | Poor | 1924 | 102 | 6,367 |
| MYERS CREEK | Oregon | Fair | 1924 | 102 | 130 |
| TUALATIN RIVER | Oregon | Fair | 1924 | 102 | 8,728 |
| DWIGHT CREEK | Oregon | Fair | 1924 | 102 | 3,436 |
| BR OF THE GODS | Oregon | Fair | 1924 | 102 | 5,208 |
| CRIPPLE CREEK | Oregon | Fair | 1924 | 102 | 24 |
| EAST FORK HOOD RIVER | Oregon | Fair | 1924 | 102 | 50 |
| COLUMBIA RIVER | Oregon | Poor | 1924 | 102 | 14,227 |
| B-16 OVER UPRR | Oregon | Fair | 1924 | 102 | 23,355 |
| NECANICUM RV | Oregon | Poor | 1924 | 102 | 7,315 |
| JOHN DAY R(MOON CR BR) | Oregon | Fair | 1924 | 102 | 29 |
| B-77 SEMI-VIADUCT | Oregon | Fair | 1924 | 102 | 11,101 |
| COW CREEK | Oregon | Fair | 1924 | 102 | 62 |
| WILDHORSE CREEK | Oregon | Fair | 1924 | 102 | 200 |
| SPRING CREEK | Oregon | Fair | 1924 | 102 | 162 |
| PINE CREEK | Oregon | Fair | 1924 | 102 | 293 |
| WILDHORSE CREEK | Oregon | Fair | 1924 | 102 | 562 |
| SCOGGINS CR OFLOW | Oregon | Fair | 1924 | 102 | 536 |
| UPRR AND MEACHAM CRK | Oregon | Poor | 1925 | 101 | 115 |
| Willamette River | Oregon | Fair | 1925 | 101 | 10,393 |
| UMATILLA RIVER(UMATILLA) | Oregon | Fair | 1925 | 101 | 8,349 |
| WILLOW CREEK | Oregon | Fair | 1925 | 101 | 5,056 |
| MORTON CREEK | Oregon | Fair | 1925 | 101 | 5,197 |
| Willamette River | Oregon | Fair | 1925 | 101 | 16,759 |
| 15 MILE CREEK | Oregon | Fair | 1925 | 101 | 252 |
| EAGLE CRK (RICHLAND) | Oregon | Fair | 1925 | 101 | 712 |
| POWDER RIVER MADISON AVE | Oregon | Fair | 1925 | 101 | 1,552 |
| POWDER RIVER/VALLEY AVE | Oregon | Fair | 1925 | 101 | 1,223 |
| OAK CR | Oregon | Fair | 1925 | 101 | 9,000 |
| MILTON CREEK | Oregon | Fair | 1925 | 101 | 340 |
| MYRTLE CREEK | Oregon | Fair | 1925 | 101 | 138 |
| SOUTH UMPQUA RIVER | Oregon | Fair | 1925 | 101 | 364 |
| WILDCAT CREEK | Oregon | Fair | 1925 | 101 | 81 |
| RHEA CREEK | Oregon | Fair | 1925 | 101 | 36 |
| GRANDE RONDE RIVER | Oregon | Poor | 1925 | 101 | 173 |
| WILLAMETTE RIVER | Oregon | Fair | 1926 | 100 | 35,000 |
| CHAPMAN CREEK | Oregon | Fair | 1926 | 100 | 1,137 |
| RIVERSIDE CANYON | Oregon | Fair | 1926 | 100 | 14,839 |
| REEVES CREEK | Oregon | Fair | 1926 | 100 | 8,286 |
| HOLTON CREEK | Oregon | Fair | 1926 | 100 | 10,152 |
| Nehalem River | Oregon | Fair | 1926 | 100 | 1,592 |
| LINK RIVER | Oregon | Fair | 1926 | 100 | 3,241 |
| Rock Creek | Oregon | Fair | 1926 | 100 | 2,352 |
| Willamette River/OPRR | Oregon | Fair | 1926 | 100 | 46,572 |
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.