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 |
|---|---|---|---|---|---|
| N.FORK JOHN DAY RIVER | Oregon | Fair | 1899 | 127 | 132 |
| BARNUM CANYON | Oregon | Good | 1900 | 126 | 74 |
| Sun Creek | Oregon | Good | 1900 | 126 | 10 |
| B-15 X MACLEAY PARK | Oregon | Fair | 1905 | 121 | 4,501 |
| OWYHEE RIVER (ROME) | Oregon | Poor | 1906 | 120 | 20 |
| BONNEVILLE DAM | Oregon | Fair | 1907 | 119 | 20 |
| Hwy 2 & UPRR | Oregon | Fair | 1908 | 118 | 35,800 |
| B-27 OVER UPRR | Oregon | Fair | 1908 | 118 | 6,578 |
| UPRR & Hwy 002 | Oregon | Fair | 1908 | 118 | 31,889 |
| B-78 OVER BNRR | Oregon | Poor | 1909 | 117 | 13,910 |
| BNSF | Oregon | Poor | 1909 | 117 | 14,374 |
| BURLINGTON NORTHERN R&R | Oregon | Fair | 1909 | 117 | 10,361 |
| BURLINGTON NORTHERN R&R | Oregon | Poor | 1909 | 117 | 4,931 |
| WILLAMETTE RIVER | Oregon | Fair | 1910 | 116 | 32,243 |
| WILLAMETTE RIVER | Oregon | Poor | 1910 | 116 | 11,732 |
| STEEL BR. E. APPR. | Oregon | Fair | 1910 | 116 | 11,732 |
| B-25 X BANFIELD AND UPRR | Oregon | Fair | 1910 | 116 | 15,347 |
| NICE CREEK | Oregon | Poor | 1911 | 115 | 732 |
| ASHLAND CREEK | Oregon | Fair | 1911 | 115 | 9,979 |
| Sandy River | Oregon | Fair | 1912 | 114 | 2,324 |
| BEAVER CREEK | Oregon | Fair | 1912 | 114 | 5,399 |
| WILLAMETTE RIVER | Oregon | Fair | 1912 | 114 | 30,871 |
| B-26 OVER UPRR | Oregon | Fair | 1912 | 114 | 13,624 |
| Willamette River | Oregon | Poor | 1913 | 113 | 12,687 |
| BROADWAY ST CONN | Oregon | Poor | 1913 | 113 | 30,388 |
| MILL CREEK | Oregon | Fair | 1913 | 113 | 2,921 |
| MILL CREEK | Oregon | Fair | 1913 | 113 | 13,876 |
| MILL RACE CANAL | Oregon | Fair | 1914 | 112 | 4,899 |
| Bridal Veil Falls | Oregon | Fair | 1914 | 112 | 1,107 |
| Viaduct | Oregon | Poor | 1914 | 112 | 901 |
| Viaduct | Oregon | Fair | 1914 | 112 | 901 |
| EAGLE CREEK | Oregon | Fair | 1914 | 112 | 85 |
| West Beaver Creek | Oregon | Fair | 1914 | 112 | 5,017 |
| CORP OR 273 (Hwy 273) | Oregon | Fair | 1914 | 112 | 196 |
| CORP | Oregon | Fair | 1914 | 112 | 196 |
| Latouraell Creel | Oregon | Fair | 1914 | 112 | 878 |
| Shepperds Dell | Oregon | Fair | 1914 | 112 | 815 |
| Multnomah Creek | Oregon | Fair | 1914 | 112 | 901 |
| Horsetail Falls | Oregon | Fair | 1914 | 112 | 901 |
| WAGNER CR./TALENT AVE. | Oregon | Fair | 1914 | 112 | 3,649 |
| SANDY RIVER | Oregon | Poor | 1914 | 112 | 6,445 |
| COUCH LATERAL | Oregon | Good | 1914 | 112 | 263 |
| B-41 SEMI-VIADUCT | Oregon | Fair | 1914 | 112 | 8,888 |
| BEAR CREEK | Oregon | Fair | 1914 | 112 | 5 |
| EIGHTMILE CREEK | Oregon | Fair | 1914 | 112 | 26 |
| DRAW | Oregon | Fair | 1915 | 111 | 6,555 |
| B-81 OVER SW BERTHA BLVD | Oregon | Fair | 1915 | 111 | 17,757 |
| WILLOW CREEK EB | Oregon | Good | 1915 | 111 | 277 |
| B-88 X FILLED STREAMBED | Oregon | Good | 1915 | 111 | 567 |
| PRAIRIE CREEK | Oregon | Fair | 1915 | 111 | 235 |
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.