Historic Bridges in Wisconsin
1,333 bridges built before 1951 in Wisconsin still in service today.
Bridges Built Before 1951
The United States has 1,333 bridges in Wisconsin 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 |
|---|---|---|---|---|---|
| BRANCH WOLF RIVER | Wisconsin | Poor | 1928 | 98 | 100 |
| CONLAN CREEK | Wisconsin | Fair | 1928 | 98 | 58 |
| CONLAN CREEK | Wisconsin | Poor | 1928 | 98 | 58 |
| BR JACK CREEK | Wisconsin | Poor | 1928 | 98 | 58 |
| N BR CRAWFISH RIVER | Wisconsin | Fair | 1928 | 98 | 630 |
| ST CROIX RIVER 15 | Wisconsin | Fair | 1928 | 98 | 107 |
| BR GRAND RIVER | Wisconsin | Good | 1928 | 98 | 47 |
| BR BLACK RIVER | Wisconsin | Fair | 1928 | 98 | 176 |
| ROARING CREEK | Wisconsin | Fair | 1928 | 98 | 66 |
| ONE MILE CREEK | Wisconsin | Fair | 1928 | 98 | 120 |
| COUNTY LINE CREEK | Wisconsin | Good | 1928 | 98 | 171 |
| SCOTCH CREEK | Wisconsin | Fair | 1928 | 98 | 570 |
| LAND | Wisconsin | Fair | 1928 | 98 | 81 |
| LEMONWEIR CREEK | Wisconsin | Poor | 1928 | 98 | 58 |
| N BR OCONTO RIVER | Wisconsin | Poor | 1928 | 98 | 50 |
| WILLOW RIVER | Wisconsin | Fair | 1928 | 98 | 210 |
| TAMARACK RIVER | Wisconsin | Poor | 1928 | 98 | 94 |
| GRANT CREEK | Wisconsin | Poor | 1928 | 98 | 58 |
| BR COOLEY CREEK | Wisconsin | Fair | 1928 | 98 | 94 |
| COMET CREEK | Wisconsin | Good | 1928 | 98 | 6 |
| MILL CREEK | Wisconsin | Fair | 1928 | 98 | 120 |
| W BR FOND DU LAC RIVER | Wisconsin | Fair | 1929 | 97 | 411 |
| S BR MANITOWOC RIVER | Wisconsin | Fair | 1929 | 97 | 708 |
| W BR ROCK RIVER | Wisconsin | Fair | 1929 | 97 | 1,400 |
| PUCKYAN RIVER | Wisconsin | Poor | 1929 | 97 | 1,600 |
| FOX RIVER | Wisconsin | Fair | 1929 | 97 | 3,900 |
| LAND | Wisconsin | Poor | 1929 | 97 | 6,280 |
| LRD BRUCE STREET | Wisconsin | Fair | 1929 | 97 | 6,280 |
| LAND | Wisconsin | Fair | 1929 | 97 | 6,280 |
| LAND | Wisconsin | Fair | 1929 | 97 | 6,280 |
| CMSTP&P RR | Wisconsin | Poor | 1929 | 97 | 6,280 |
| CMSTP&P RR | Wisconsin | Poor | 1929 | 97 | 6,280 |
| LAND | Wisconsin | Poor | 1929 | 97 | 6,280 |
| LAND | Wisconsin | Poor | 1929 | 97 | 6,280 |
| LAND | Wisconsin | Poor | 1929 | 97 | 6,280 |
| LAND | Wisconsin | Poor | 1929 | 97 | 6,280 |
| LAND | Wisconsin | Poor | 1929 | 97 | 9,109 |
| LRD CANAL ST & CMSTP&P R | Wisconsin | Fair | 1929 | 97 | 9,300 |
| LAND | Wisconsin | Poor | 1929 | 97 | 9,109 |
| MENOMONEE RIVER | Wisconsin | Poor | 1929 | 97 | 9,109 |
| LAND | Wisconsin | Poor | 1929 | 97 | 9,109 |
| CMSTP&P RR | Wisconsin | Fair | 1929 | 97 | 9,100 |
| ST PAUL AVE & BUILDINGS | Wisconsin | Fair | 1929 | 97 | 9,100 |
| IH 94 E-W FREEWAY | Wisconsin | Fair | 1929 | 97 | 9,100 |
| LAND | Wisconsin | Fair | 1929 | 97 | 3,642 |
| LAND | Wisconsin | Fair | 1929 | 97 | 3,642 |
| LAND | Wisconsin | Fair | 1929 | 97 | 3,642 |
| LAND | Wisconsin | Fair | 1929 | 97 | 3,642 |
| KICKAPOO RIVER | Wisconsin | Poor | 1929 | 97 | 470 |
| ENGLE CREEK | Wisconsin | Fair | 1929 | 97 | 75 |
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.