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 |
|---|---|---|---|---|---|
| Beaver Creek Overflow | Oregon | Fair | 1940 | 86 | 3,512 |
| JOHNSON CREEK | Oregon | Fair | 1940 | 86 | 5,253 |
| Cox Creek | Oregon | Fair | 1940 | 86 | 6,722 |
| SEQUOIA CREEK | Oregon | Fair | 1940 | 86 | 19,662 |
| IRRIGATION DITCH | Oregon | Fair | 1940 | 86 | 481 |
| C.O.I. NORTH CANAL | Oregon | Fair | 1940 | 86 | 23,351 |
| PLUM CREEK | Oregon | Poor | 1940 | 86 | 15 |
| SPILLWAY AT LAKE SELMAC | Oregon | Good | 1940 | 86 | 1,792 |
| POWELL CREEK | Oregon | Fair | 1940 | 86 | 2,612 |
| JUMPOFF JOE CREEK | Oregon | Fair | 1940 | 86 | 2,871 |
| JACKS CREEK | Oregon | Fair | 1940 | 86 | 640 |
| WOLF CREEK | Oregon | Fair | 1940 | 86 | 3,071 |
| COX CREEK | Oregon | Poor | 1940 | 86 | 11,330 |
| DEAD OX CANAL | Oregon | Good | 1940 | 86 | 272 |
| EASTON CANYON #4 | Oregon | Poor | 1940 | 86 | 54 |
| SEVENMILE CREEK | Oregon | Fair | 1940 | 86 | 608 |
| RAIL HOLLOW CREEK | Oregon | Fair | 1940 | 86 | 871 |
| ANTELOPE CREEK | Oregon | Fair | 1940 | 86 | 31 |
| DRY CREEK | Oregon | Fair | 1940 | 86 | 33 |
| Mt Scott Creek & UPRR | Oregon | Fair | 1941 | 85 | 30,494 |
| W FK Dairy Creek | Oregon | Good | 1941 | 85 | 8,934 |
| Hwy 102 Davies/PTB | Oregon | Fair | 1941 | 85 | 8,934 |
| LOST RIVER | Oregon | Fair | 1941 | 85 | 5,002 |
| Yaquina River | Oregon | Poor | 1941 | 85 | 206 |
| ROCK CR. (PICTURE GORGE) | Oregon | Fair | 1941 | 85 | 814 |
| CREEK | Oregon | Fair | 1941 | 85 | 13,164 |
| Deer Creek | Oregon | Fair | 1941 | 85 | 16,492 |
| Beaver Creek | Oregon | Fair | 1941 | 85 | 3,512 |
| TRIB. OF BEAVER CREEK | Oregon | Fair | 1941 | 85 | 978 |
| SMITH CREEK | Oregon | Fair | 1941 | 85 | 460 |
| FOX CREEK | Oregon | Fair | 1941 | 85 | 479 |
| MILL CREEK | Oregon | Poor | 1941 | 85 | 770 |
| MILL CREEK | Oregon | Fair | 1941 | 85 | 715 |
| MILL CREEK | Oregon | Fair | 1941 | 85 | 625 |
| GRIFFIN CR/SO. STAGE RD. | Oregon | Fair | 1941 | 85 | 5,270 |
| MILL CREEK | Oregon | Fair | 1941 | 85 | 2,192 |
| Squaw Creek | Oregon | Fair | 1942 | 84 | 576 |
| WRENN DOBBIN DITCH | Oregon | Poor | 1942 | 84 | 940 |
| Rogue River | Oregon | Fair | 1942 | 84 | 7,259 |
| South Fork Dairy Creek | Oregon | Good | 1942 | 84 | 6,189 |
| N Fork Necanicum River | Oregon | Fair | 1942 | 84 | 5,133 |
| MILL CREEK | Oregon | Good | 1942 | 84 | 3,395 |
| Dixion Creek | Oregon | Fair | 1942 | 84 | 10,003 |
| Dixion Creek | Oregon | Good | 1942 | 84 | 9,617 |
| WALKER CREEK | Oregon | Fair | 1942 | 84 | 218 |
| WHETSTONE CREEK | Oregon | Fair | 1942 | 84 | 12,446 |
| MALHEUR RIVER | Oregon | Fair | 1942 | 84 | 77 |
| LITTLE RIVER | Oregon | Fair | 1943 | 83 | 290 |
| COW CREEK | Oregon | Fair | 1944 | 82 | 2,053 |
| Schooner Creek | Oregon | Fair | 1945 | 81 | 14,212 |
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.