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 |
|---|---|---|---|---|---|
| BN RR | Wisconsin | Fair | 1941 | 85 | 10,200 |
| N BR DUCK CREEK | Wisconsin | Poor | 1941 | 85 | 52 |
| BR KICKAPOO RIVER | Wisconsin | Poor | 1941 | 85 | 600 |
| BR KICKAPOO RIVER | Wisconsin | Poor | 1941 | 85 | 600 |
| BR KICKAPOO RIVER | Wisconsin | Poor | 1941 | 85 | 210 |
| BADFISH CREEK | Wisconsin | Poor | 1941 | 85 | 146 |
| KOSHKONONG CREEK | Wisconsin | Poor | 1941 | 85 | 3,000 |
| RED CEDAR RIVER | Wisconsin | Fair | 1941 | 85 | 10,050 |
| BROWN CREEK | Wisconsin | Fair | 1941 | 85 | 2,300 |
| BRULE RIVER | Wisconsin | Fair | 1941 | 85 | 3,800 |
| BR BURNS CREEK | Wisconsin | Fair | 1941 | 85 | 4,800 |
| BIG CREEK | Wisconsin | Fair | 1941 | 85 | 4,200 |
| COMET CREEK | Wisconsin | Fair | 1941 | 85 | 1,900 |
| LINCOLN CREEK | Wisconsin | Fair | 1941 | 85 | 15,866 |
| TRIMBELLE RIVER | Wisconsin | Fair | 1941 | 85 | 2,500 |
| BR S FK KINNICKINNIC R | Wisconsin | Fair | 1941 | 85 | 2,500 |
| BR WILLOW RIVER | Wisconsin | Fair | 1941 | 85 | 8,200 |
| SPRING VALLEY CREEK | Wisconsin | Fair | 1941 | 85 | 1,700 |
| BARABOO RIVER | Wisconsin | Fair | 1941 | 85 | 1,400 |
| N BR EMBARRASS RIVER | Wisconsin | Fair | 1941 | 85 | 930 |
| BR N FK BAD AXE RIVER | Wisconsin | Fair | 1941 | 85 | 1,200 |
| N FK BAD AXE RIVER | Wisconsin | Fair | 1941 | 85 | 58 |
| COE HOLLOW CREEK | Wisconsin | Poor | 1941 | 85 | 195 |
| HELEN CREEK | Wisconsin | Good | 1941 | 85 | 1,087 |
| COMO CREEK | Wisconsin | Fair | 1941 | 85 | 9,000 |
| BR LITTLE WOLF RIVER | Wisconsin | Fair | 1941 | 85 | 6,500 |
| SYLVESTER CREEK | Wisconsin | Fair | 1941 | 85 | 158 |
| TIMBER CREEK | Wisconsin | Fair | 1941 | 85 | 200 |
| N BR TREMPEALEAU RIVER | Wisconsin | Poor | 1941 | 85 | 11 |
| BR DUTCH GAP CANAL | Wisconsin | Poor | 1941 | 85 | 5,200 |
| BR COON CREEK | Wisconsin | Poor | 1941 | 85 | 94 |
| POINT CREEK | Wisconsin | Fair | 1941 | 85 | 52 |
| LITTLE RIB RIVER | Wisconsin | Poor | 1941 | 85 | 95 |
| MARSH CREEK | Wisconsin | Fair | 1941 | 85 | 90 |
| E BR LT EAU PLEINE RIVER | Wisconsin | Fair | 1941 | 85 | 1,465 |
| TRADE RIVER | Wisconsin | Fair | 1941 | 85 | 520 |
| SKUNK CREEK | Wisconsin | Fair | 1941 | 85 | 45 |
| PENSAUKEE RIVER | Wisconsin | Fair | 1941 | 85 | 1,200 |
| MISSISSIPPI RIVER 08 | Wisconsin | Fair | 1942 | 84 | 10,200 |
| DUNCAN CREEK | Wisconsin | Fair | 1942 | 84 | 10,130 |
| YELLOW RIVER | Wisconsin | Poor | 1942 | 84 | 1,985 |
| LAKE DU BAY | Wisconsin | Fair | 1942 | 84 | 1,803 |
| LITTLE SUAMICO RIVER | Wisconsin | Fair | 1942 | 84 | 1,300 |
| LITTLE EAU CLAIRE RIVER | Wisconsin | Fair | 1942 | 84 | 473 |
| BEAVER CREEK | Wisconsin | Fair | 1942 | 84 | 4,400 |
| OCONOMOWOC RIVER | Wisconsin | Poor | 1942 | 84 | 1,015 |
| FORWARD CREEK | Wisconsin | Fair | 1942 | 84 | 580 |
| W BR RED RIVER | Wisconsin | Fair | 1942 | 84 | 770 |
| COMET CREEK | Wisconsin | Fair | 1942 | 84 | 247 |
| PIGEON RIVER | Wisconsin | Fair | 1942 | 84 | 352 |
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.