Historic Bridges in Illinois
3,065 bridges built before 1951 in Illinois still in service today.
Bridges Built Before 1951
The United States has 3,065 bridges in Illinois 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 |
|---|---|---|---|---|---|
| SNIPE HOLLOW BR | Illinois | Fair | 1920 | 106 | 350 |
| CAMP CREEK | Illinois | Poor | 1920 | 106 | 50 |
| CAVE CREEK | Illinois | Fair | 1920 | 106 | 2,000 |
| INDIAN CREEK | Illinois | Fair | 1920 | 106 | 475 |
| GUM CREEK | Illinois | Poor | 1920 | 106 | 175 |
| GUM CR | Illinois | Poor | 1920 | 106 | 125 |
| B & O RR | Illinois | Poor | 1920 | 106 | 100 |
| WEST FORK MAZON R | Illinois | Poor | 1920 | 106 | 50 |
| MOLE CREEK | Illinois | Fair | 1920 | 106 | 50 |
| VERMILION R | Illinois | Good | 1920 | 106 | 50 |
| WOLF CREEK | Illinois | Poor | 1920 | 106 | 100 |
| DRAINAGE DITCH | Illinois | Fair | 1920 | 106 | 50 |
| LONGMEYER DITCH | Illinois | Good | 1920 | 106 | 525 |
| GRINDSTONE CREEK | Illinois | Fair | 1920 | 106 | 50 |
| MOKELER CREEK | Illinois | Fair | 1920 | 106 | 250 |
| BRANCH-SUGAR CR | Illinois | Fair | 1920 | 106 | 100 |
| HONEY CREEK | Illinois | Poor | 1920 | 106 | 20 |
| CAHOKIA CR | Illinois | Fair | 1920 | 106 | 175 |
| SPANKER BR | Illinois | Fair | 1920 | 106 | 150 |
| LOUSE RUN TRIBUTARY | Illinois | Fair | 1920 | 106 | 2,750 |
| LOST CREEK | Illinois | Poor | 1920 | 106 | 175 |
| WEBSTER CREEK | Illinois | Fair | 1920 | 106 | 150 |
| CREEK | Illinois | Fair | 1920 | 106 | 175 |
| CREEK | Illinois | Fair | 1920 | 106 | 150 |
| MALLARD CREEK | Illinois | Fair | 1920 | 106 | 100 |
| Ditch | Illinois | Poor | 1920 | 106 | 1,350 |
| DITCH | Illinois | Fair | 1920 | 106 | 850 |
| CHICKEN CREEK | Illinois | Good | 1920 | 106 | 175 |
| HADLEY CR TRIBUTARY | Illinois | Fair | 1920 | 106 | 50 |
| WALNUT CR TRIBUTARY | Illinois | Poor | 1920 | 106 | 25 |
| BUCKHORN CREEK | Illinois | Poor | 1920 | 106 | 25 |
| BUCKHORN CREEK | Illinois | Poor | 1920 | 106 | 20 |
| MIDDLE FK MCKEE TR1B | Illinois | Poor | 1920 | 106 | 50 |
| INDIAN CAMP CREEK | Illinois | Fair | 1920 | 106 | 1,000 |
| CACHE RIVER | Illinois | Fair | 1920 | 106 | 1,900 |
| SENACHWINE CREEK | Illinois | Fair | 1920 | 106 | 550 |
| RAYHILLS SLOUGH | Illinois | Fair | 1920 | 106 | 2,000 |
| STREAM | Illinois | Poor | 1920 | 106 | 50 |
| BR OF WADDAMS CREEK | Illinois | Fair | 1920 | 106 | 75 |
| CRANE CREEK | Illinois | Fair | 1920 | 106 | 1,500 |
| LITTLE CREEK | Illinois | Fair | 1920 | 106 | 25 |
| STREAM | Illinois | Fair | 1920 | 106 | 50 |
| BR WILLIAMS CR | Illinois | Poor | 1920 | 106 | 50 |
| NASHVILLE CREEK | Illinois | Fair | 1920 | 106 | 675 |
| NASHVILLE CREEK | Illinois | Fair | 1920 | 106 | 700 |
| BR NORTH CREEK | Illinois | Poor | 1920 | 106 | 10 |
| BR NORTH CREEK | Illinois | Poor | 1920 | 106 | 25 |
| LITTLE MUDDY RIVER | Illinois | Fair | 1920 | 106 | 25 |
| STREAM | Illinois | Fair | 1920 | 106 | 725 |
| STREAM | Illinois | Fair | 1920 | 106 | 725 |
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.