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 |
|---|---|---|---|---|---|
| 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.