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 |
|---|---|---|---|---|---|
| JOE CREEK | Illinois | Poor | 1916 | 110 | 50 |
| CREEK | Illinois | Fair | 1916 | 110 | 20 |
| PADDOCK CREEK | Illinois | Fair | 1916 | 110 | 125 |
| HORSE CRK. | Illinois | Poor | 1916 | 110 | 20 |
| TRIB TO SILVER CK | Illinois | Fair | 1916 | 110 | 200 |
| HURRICANE CR | Illinois | Fair | 1916 | 110 | 25 |
| FARGO RUN | Illinois | Poor | 1916 | 110 | 75 |
| HADLEY CR TRIBUTARY | Illinois | Fair | 1916 | 110 | 25 |
| Little Blue Creek | Illinois | Good | 1916 | 110 | 50 |
| STREAM | Illinois | Fair | 1916 | 110 | 1,000 |
| HORNEY BRANCH | Illinois | Fair | 1916 | 110 | 150 |
| W BR LITTLE WABASH R | Illinois | Poor | 1916 | 110 | 475 |
| FLAT BRANCH | Illinois | Fair | 1916 | 110 | 50 |
| STREAM | Illinois | Fair | 1916 | 110 | 50 |
| STREAM | Illinois | Fair | 1916 | 110 | 50 |
| BR CROOKED CR | Illinois | Fair | 1916 | 110 | 25 |
| NORTH CREEK | Illinois | Fair | 1916 | 110 | 500 |
| BR LITTLE CROOKED CR | Illinois | Fair | 1916 | 110 | 50 |
| BR GRAND POINT CR | Illinois | Fair | 1916 | 110 | 50 |
| JACKSON CREEK | Illinois | Good | 1916 | 110 | 9,150 |
| BRANCH OF DRY BRANCH | Illinois | Fair | 1917 | 109 | 25 |
| BRUSHY BRANCH | Illinois | Fair | 1917 | 109 | 50 |
| WILLOW CREEK | Illinois | Fair | 1917 | 109 | 10 |
| N BR CHICAGO RIVER | Illinois | Fair | 1917 | 109 | 11,600 |
| SHORT CREEK | Illinois | Poor | 1917 | 109 | 20 |
| MIDDLE CREEK | Illinois | Poor | 1917 | 109 | 50 |
| CAMP CREEK | Illinois | Poor | 1917 | 109 | 75 |
| MUD CR | Illinois | Poor | 1917 | 109 | 25 |
| FOX RIVER | Illinois | Poor | 1917 | 109 | 16,900 |
| COOP BR | Illinois | Poor | 1917 | 109 | 100 |
| WHITLEY CREEK | Illinois | Poor | 1917 | 109 | 100 |
| BILLS CREEK | Illinois | Fair | 1917 | 109 | 100 |
| WILLOW CREEK | Illinois | Fair | 1917 | 109 | 50 |
| COON BRANCH | Illinois | Fair | 1917 | 109 | 50 |
| DODDS BRANCH | Illinois | Fair | 1917 | 109 | 20 |
| PLUM CREEK | Illinois | Fair | 1917 | 109 | 225 |
| GRINDSTONE CRK. | Illinois | Fair | 1918 | 108 | 50 |
| TILTON CREEK | Illinois | Fair | 1918 | 108 | 50 |
| W FK OF BEAR CREEK | Illinois | Fair | 1918 | 108 | 50 |
| LITTLE BEAVER CREEK | Illinois | Poor | 1918 | 108 | 2,000 |
| TRIB LITTLE MUD CR | Illinois | Poor | 1918 | 108 | 150 |
| TRIB TO SUGAR FK | Illinois | Fair | 1918 | 108 | 50 |
| NORTH FORK | Illinois | Fair | 1918 | 108 | 25 |
| SILVER CK OVFL | Illinois | Fair | 1918 | 108 | 16,000 |
| BR GRAND POINT CR | Illinois | Fair | 1918 | 108 | 50 |
| OAK BRANCH | Illinois | Fair | 1919 | 107 | 100 |
| PAPER MILL BRANCH | Illinois | Poor | 1919 | 107 | 300 |
| TOOLE CREEK | Illinois | Fair | 1919 | 107 | 425 |
| BRANCH SUGAR CREEK | Illinois | Fair | 1919 | 107 | 100 |
| S BR CHICAGO RIV | Illinois | Fair | 1919 | 107 | 4,650 |
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.