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 |
|---|---|---|---|---|---|
| CRABAPPLE CREEK | Illinois | Good | 1931 | 95 | 1,350 |
| SALT FORK | Illinois | Poor | 1931 | 95 | 150 |
| STREAM | Illinois | Fair | 1931 | 95 | 3,450 |
| STREAM | Illinois | Fair | 1931 | 95 | 2,550 |
| TRIB CASSER CREEK | Illinois | Fair | 1931 | 95 | 450 |
| UNKNOWN STREAM | Illinois | Fair | 1931 | 95 | 75 |
| STREAM | Illinois | Good | 1931 | 95 | — |
| CACHE RIVER | Illinois | Fair | 1931 | 95 | 1,350 |
| BELL POND CREEK | Illinois | Fair | 1931 | 95 | 900 |
| FOX RIVER | Illinois | Poor | 1931 | 95 | 9,850 |
| FOX RIVER | Illinois | Fair | 1931 | 95 | 11,900 |
| YOUNGS CREEK | Illinois | Fair | 1931 | 95 | 2,500 |
| WELCH CREEK | Illinois | Fair | 1931 | 95 | 1,050 |
| MACON CREEK | Illinois | Fair | 1931 | 95 | 650 |
| CEDAR FORK CREEK | Illinois | Poor | 1931 | 95 | 50 |
| CEDAR CREEK | Illinois | Good | 1931 | 95 | 1,500 |
| BOAT CHANNEL | Illinois | Good | 1931 | 95 | 11,200 |
| BANGS LAKE OUTLET | Illinois | Fair | 1931 | 95 | 16,200 |
| SEQUOIT CREEK | Illinois | Fair | 1931 | 95 | 13,900 |
| FOX RIVER | Illinois | Poor | 1931 | 95 | 1,850 |
| UNKNOWN STREAM | Illinois | Fair | 1931 | 95 | 1,850 |
| TR-209 & WABASH RV | Illinois | Fair | 1931 | 95 | 5,000 |
| BRANCH LITTLE BONPAS | Illinois | Fair | 1931 | 95 | 775 |
| OTTER POND DRAIN DT | Illinois | Poor | 1931 | 95 | 50 |
| SUGAR CREEK | Illinois | Fair | 1931 | 95 | 50 |
| DRAINAGE DITCH | Illinois | Fair | 1931 | 95 | 600 |
| CREEK | Illinois | Fair | 1931 | 95 | 575 |
| DIAMOND CREEK | Illinois | Fair | 1931 | 95 | 10 |
| MOON CREEK | Illinois | Poor | 1931 | 95 | 75 |
| SUGAR CREEK | Illinois | Fair | 1931 | 95 | 2,000 |
| NORTH BR LAKE FORK | Illinois | Fair | 1931 | 95 | 2,850 |
| TROUBLESOME CREEK | Illinois | Good | 1931 | 95 | 650 |
| E Fork Lamoine River | Illinois | Poor | 1931 | 95 | 550 |
| CREEK | Illinois | Fair | 1931 | 95 | 3,750 |
| MACOUPIN CREEK | Illinois | Fair | 1931 | 95 | 900 |
| WHITE OAK CREEK | Illinois | Fair | 1931 | 95 | 1,750 |
| HENDERSON CR | Illinois | Poor | 1931 | 95 | 2,400 |
| APPLE CREEK | Illinois | Fair | 1931 | 95 | 1,700 |
| MADDEN CREEK | Illinois | Good | 1931 | 95 | 1,950 |
| CREEK | Illinois | Fair | 1931 | 95 | 1,250 |
| FRIENDS CREEK DITCH | Illinois | Fair | 1931 | 95 | 1,250 |
| CREEK | Illinois | Fair | 1931 | 95 | 1,250 |
| DRAINAGE DITCH | Illinois | Fair | 1931 | 95 | 3,850 |
| DRAINAGE DITCH | Illinois | Fair | 1931 | 95 | 4,550 |
| WOLF RUN CREEK | Illinois | Fair | 1931 | 95 | 2,050 |
| INDIAN CREEK | Illinois | Fair | 1931 | 95 | 1,700 |
| TRIB PECATONICA R | Illinois | Fair | 1931 | 95 | 1,250 |
| YELLOW CREEK | Illinois | Poor | 1931 | 95 | 100 |
| STREAM | Illinois | Good | 1931 | 95 | 900 |
| UNNAMED CREEK | Illinois | Good | 1931 | 95 | 1,650 |
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.