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 |
|---|---|---|---|---|---|
| STREAM | Minnesota | Fair | 1925 | 101 | 2,050 |
| STREAM | Minnesota | Fair | 1925 | 101 | 2,050 |
| SHELL RIVER | Minnesota | Fair | 1925 | 101 | 5,300 |
| LE SUEUR CREEK | Minnesota | Fair | 1925 | 101 | 131 |
| SAND CREEK | Minnesota | Fair | 1925 | 101 | 409 |
| MILLER CREEK | Minnesota | Fair | 1925 | 101 | 7,020 |
| MAPLE LAKE OUTLET (DAM) | Minnesota | Fair | 1925 | 101 | 5 |
| STREAM | Minnesota | Fair | 1925 | 101 | 92 |
| STREAM | Minnesota | Fair | 1925 | 101 | 930 |
| BIG COTTONWOOD RIVER | Minnesota | Fair | 1925 | 101 | 13 |
| DRY RUN | Minnesota | Fair | 1925 | 101 | 75 |
| S BR YELLOW MEDICINE R | Minnesota | Fair | 1925 | 101 | 29 |
| S BR YELLOW MEDICINE R | Minnesota | Poor | 1925 | 101 | 25 |
| MINNEHAHA CREEK | Minnesota | Fair | 1925 | 101 | 867 |
| MINNEHAHA CREEK | Minnesota | Fair | 1925 | 101 | 867 |
| MINNEHAHA CREEK | Minnesota | Fair | 1925 | 101 | 5,000 |
| TISCHERS CREEK | Minnesota | Fair | 1925 | 101 | 1,763 |
| DRY CREEK | Minnesota | Fair | 1925 | 101 | 30 |
| ELM CREEK | Minnesota | Poor | 1925 | 101 | 16 |
| BR CO DITCH 66 | Minnesota | Poor | 1925 | 101 | 4 |
| SAND HILL RIVER | Minnesota | Poor | 1925 | 101 | 8 |
| BNSF RR | Minnesota | Poor | 1925 | 101 | 36 |
| POPLAR RIVER | Minnesota | Fair | 1925 | 101 | 8 |
| CANBY CREEK | Minnesota | Fair | 1925 | 101 | 20 |
| ST AUGUSTA CREEK | Minnesota | Poor | 1925 | 101 | 1 |
| MINN RIVER RR STREET | Minnesota | Fair | 1926 | 100 | 47,417 |
| DITCH | Minnesota | Fair | 1926 | 100 | 5,200 |
| RICE CREEK | Minnesota | Fair | 1926 | 100 | 3,819 |
| MC RY | Minnesota | Poor | 1926 | 100 | 5,800 |
| CP RAIL | Minnesota | Fair | 1926 | 100 | 13,300 |
| MAPLE RIVER | Minnesota | Good | 1926 | 100 | 75 |
| STREAM | Minnesota | Fair | 1926 | 100 | 25 |
| STREAM | Minnesota | Good | 1926 | 100 | 796 |
| STREAM | Minnesota | Fair | 1926 | 100 | 796 |
| STREAM | Minnesota | Fair | 1926 | 100 | 2,050 |
| STREAM | Minnesota | Fair | 1926 | 100 | 2,050 |
| STREAM | Minnesota | Good | 1926 | 100 | 2,050 |
| STREAM | Minnesota | Fair | 1926 | 100 | 2,050 |
| DITCH | Minnesota | Fair | 1926 | 100 | 16,334 |
| MISSISSIPPI RIVER; RR | Minnesota | Poor | 1926 | 100 | 17,600 |
| MINNEHAHA CREEK | Minnesota | Fair | 1926 | 100 | 31,067 |
| VERMILLION RIVER | Minnesota | Fair | 1926 | 100 | 115 |
| CO DITCH #22 | Minnesota | Fair | 1926 | 100 | 4 |
| STREAM | Minnesota | Fair | 1926 | 100 | 8 |
| STREAM | Minnesota | Poor | 1926 | 100 | 4 |
| MINNEHAHA CREEK | Minnesota | Fair | 1926 | 100 | 1,200 |
| MISS R; MISS BL | Minnesota | Fair | 1927 | 99 | 18,900 |
| RAVINE | Minnesota | Fair | 1927 | 99 | 3,150 |
| CP RAIL | Minnesota | Poor | 1927 | 99 | 19,510 |
| FLORIDA CREEK | Minnesota | Fair | 1927 | 99 | 20 |
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.