Historic Bridges in Minnesota
1,035 bridges built before 1951 in Minnesota still in service today.
Bridges Built Before 1951
The United States has 1,035 bridges in Minnesota 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 |
|---|---|---|---|---|---|
| STONEY BROOK RIVER | Minnesota | Poor | 1941 | 85 | 200 |
| STREAM | Minnesota | Fair | 1941 | 85 | 125 |
| JACK CREEK | Minnesota | Fair | 1941 | 85 | 20 |
| BNSF RR | Minnesota | Poor | 1941 | 85 | 1,334 |
| ST ALBANS BAY | Minnesota | Poor | 1941 | 85 | 4,400 |
| MOUND CREEK | Minnesota | Fair | 1941 | 85 | 127 |
| CO DITCH # 31 | Minnesota | Fair | 1941 | 85 | 60 |
| STREAM | Minnesota | Fair | 1941 | 85 | 55 |
| JACK CREEK | Minnesota | Fair | 1941 | 85 | 35 |
| STREAM | Minnesota | Good | 1941 | 85 | 321 |
| THREE MILE CREEK | Minnesota | Fair | 1941 | 85 | 145 |
| REDWOOD RIVER | Minnesota | Fair | 1941 | 85 | 75 |
| TRIB REDWOOD RIVER | Minnesota | Poor | 1941 | 85 | 70 |
| STREAM | Minnesota | Fair | 1941 | 85 | 52 |
| STREAM | Minnesota | Good | 1941 | 85 | 56 |
| CLEARWATER RIVER | Minnesota | Fair | 1942 | 84 | 2,750 |
| CNW RY (ABAN) | Minnesota | Fair | 1942 | 84 | 5,500 |
| STRAIGHT RIVER | Minnesota | Fair | 1942 | 84 | 300 |
| RUM RIVER | Minnesota | Fair | 1942 | 84 | 17,029 |
| CP RAIL | Minnesota | Fair | 1942 | 84 | 27,500 |
| PHALEN BLVD; UP RR | Minnesota | Poor | 1942 | 84 | 4,150 |
| MINNEOPA CREEK | Minnesota | Fair | 1942 | 84 | 2,464 |
| CLEARWATER RIVER | Minnesota | Good | 1942 | 84 | 4,419 |
| CANBY CREEK | Minnesota | Fair | 1942 | 84 | 1,027 |
| WHISKEY DITCH | Minnesota | Fair | 1942 | 84 | 6,300 |
| DITCH | Minnesota | Fair | 1942 | 84 | 30 |
| STREAM | Minnesota | Fair | 1942 | 84 | 95 |
| BIG SPRINGS CREEK | Minnesota | Fair | 1942 | 84 | 35 |
| DITCH | Minnesota | Fair | 1942 | 84 | 25 |
| TWO RIVERS | Minnesota | Fair | 1942 | 84 | 40 |
| MISSISSIPPI RIVER | Minnesota | Fair | 1943 | 83 | 9,809 |
| SHANNON RIVER | Minnesota | Fair | 1943 | 83 | 340 |
| TRIB POPLAR CREEK | Minnesota | Poor | 1943 | 83 | 56 |
| DEMPSEY CREEK | Minnesota | Fair | 1943 | 83 | 4 |
| BNSF RR | Minnesota | Fair | 1943 | 83 | 40 |
| STREAM | Minnesota | Fair | 1944 | 82 | 1,967 |
| STREAM | Minnesota | Fair | 1944 | 82 | 680 |
| STREAM | Minnesota | Fair | 1944 | 82 | 75 |
| S BR WATER HEN CREEK | Minnesota | Fair | 1945 | 81 | 760 |
| JUD DITCH # 11 | Minnesota | Poor | 1945 | 81 | 4 |
| BEAR RIVER CREEK | Minnesota | Fair | 1945 | 81 | 480 |
| BNSF RR | Minnesota | Fair | 1945 | 81 | 100 |
| LAKE TRAVRSE OVERFLW DIV | Minnesota | Fair | 1945 | 81 | 1,120 |
| S BR VERMILLION RIVER | Minnesota | Fair | 1945 | 81 | 75 |
| KANARANZI CREEK | Minnesota | Fair | 1945 | 81 | 900 |
| STREAM | Minnesota | Poor | 1945 | 81 | 31 |
| STREAM | Minnesota | Fair | 1945 | 81 | 44 |
| STONY CREEK | Minnesota | Poor | 1945 | 81 | 5 |
| STREAM | Minnesota | Good | 1945 | 81 | 42 |
| N BR YELLOW MEDICINE R | Minnesota | Fair | 1946 | 80 | 1,260 |
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.