Historic Bridges in Washington
1,188 bridges built before 1951 in Washington still in service today.
Bridges Built Before 1951
The United States has 1,188 bridges in Washington 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 |
|---|---|---|---|---|---|
| SCATTER CREEK | Washington | Fair | 1923 | 103 | 5,042 |
| SCATTER CREEK | Washington | Fair | 1923 | 103 | 7,789 |
| CALIFORNIA CR | Washington | Good | 1923 | 103 | 643 |
| MILL CREEK | Washington | Fair | 1923 | 103 | 2,296 |
| NISQUALLY RIVER | Washington | Poor | 1923 | 103 | 250 |
| MONTLAKE CUT | Washington | Fair | 1924 | 102 | 55,497 |
| COLUMBIA RIVER | Washington | Fair | 1924 | 102 | 14,900 |
| SELAH CREEK | Washington | Fair | 1924 | 102 | 1,578 |
| LMUMA CREEK | Washington | Fair | 1924 | 102 | 1,374 |
| KIMBALL CR | Washington | Fair | 1924 | 102 | 11,531 |
| HAMMA HAMMA RIVER | Washington | Fair | 1924 | 102 | 2,911 |
| HAMMA HAMMA RIVER | Washington | Good | 1924 | 102 | 2,911 |
| OYSTER CREEK | Washington | Fair | 1924 | 102 | 2,472 |
| ROSE CREEK | Washington | Good | 1924 | 102 | 2,772 |
| OVERFLOW CHANNEL | Washington | Fair | 1924 | 102 | 301 |
| OLEQUA CREEK | Washington | Poor | 1924 | 102 | 215 |
| PILCHUCK RIVER | Washington | Fair | 1924 | 102 | 421 |
| CALIFORNIA CR | Washington | Fair | 1924 | 102 | 3,810 |
| TEN MILE CR. | Washington | Fair | 1924 | 102 | 1,192 |
| TOWN DITCH | Washington | Poor | 1924 | 102 | 1,825 |
| TILTON RIVER | Washington | Poor | 1924 | 102 | 117 |
| HAMILTON CR-GREENLEAF SL | Washington | Fair | 1924 | 102 | 299 |
| MILL CREEK | Washington | Fair | 1924 | 102 | 2,300 |
| PATAHA CR | Washington | Fair | 1925 | 101 | 680 |
| OVERFLOW CHANNEL | Washington | Fair | 1925 | 101 | 11,531 |
| LAWTON CREEK | Washington | Good | 1925 | 101 | 5,270 |
| FINCH CREEK | Washington | Good | 1925 | 101 | 4,585 |
| LILLIWAUP R | Washington | Fair | 1925 | 101 | 3,173 |
| KIONA CREEK | Washington | Good | 1925 | 101 | 4,795 |
| WISHKAH RIVER | Washington | Poor | 1925 | 101 | 16,009 |
| SUND CREEK | Washington | Fair | 1925 | 101 | 3,766 |
| WHETSTONE CREEK | Washington | Good | 1925 | 101 | 250 |
| YAKIMA VALLEY CANAL | Washington | Good | 1925 | 101 | 1,760 |
| CANNAWAI CREEK | Washington | Good | 1925 | 101 | 27 |
| GUEMES CHANNEL | Washington | Fair | 1925 | 101 | 500 |
| INTERMITTENT STREAM | Washington | Fair | 1925 | 101 | 28 |
| PUYALLUP RIVER | Washington | Poor | 1925 | 101 | 15,255 |
| RAILROAD | Washington | Poor | 1925 | 101 | 15,256 |
| TERRAIN | Washington | Fair | 1925 | 101 | 15,000 |
| RAMP | Washington | Fair | 1925 | 101 | 15,000 |
| OLIVER CREEK | Washington | Fair | 1926 | 100 | 4,795 |
| FULTON CREEK | Washington | Fair | 1926 | 100 | 2,667 |
| SLOUGH | Washington | Fair | 1926 | 100 | 10,063 |
| SLOUGH | Washington | Fair | 1926 | 100 | 11,627 |
| SCATTER CREEK | Washington | Fair | 1926 | 100 | 13,337 |
| DUNCAN CR | Washington | Fair | 1926 | 100 | 4,755 |
| NEWAUKUM OVERFLOW | Washington | Fair | 1926 | 100 | 3,427 |
| NEWAUKUM OVERFLOW | Washington | Fair | 1926 | 100 | 3,427 |
| WESTSIDE DITCH | Washington | Fair | 1926 | 100 | 959 |
| DRY HOLLOW | Washington | Poor | 1926 | 100 | 36 |
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.