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 |
|---|---|---|---|---|---|
| DRAINAGE DITCH | Illinois | Good | 1900 | 126 | 250 |
| DRAINAGE DITCH | Illinois | Good | 1900 | 126 | 50 |
| JORDAN SLOUGH | Illinois | Good | 1900 | 126 | 25 |
| DRAINAGE DITCH | Illinois | Good | 1900 | 126 | 75 |
| STREAM | Illinois | Good | 1900 | 126 | 50 |
| STREAM | Illinois | Poor | 1900 | 126 | 50 |
| SALT FORK | Illinois | Fair | 1900 | 126 | 50 |
| SHILOH DRAIN DITCH 3 | Illinois | Fair | 1900 | 126 | 25 |
| STREAM | Illinois | Fair | 1900 | 126 | 350 |
| LITTLE MUDDY RIVER | Illinois | Good | 1900 | 126 | 300 |
| LITTLE MUDDY RIVER | Illinois | Good | 1900 | 126 | 150 |
| THOMPSON RESERVOIR | Illinois | Poor | 1900 | 126 | 50 |
| BENTON LAKE | Illinois | Good | 1900 | 126 | 550 |
| TRIB BIG MUDDY | Illinois | Good | 1900 | 126 | 35 |
| MIDDLE FORK CREEK | Illinois | Fair | 1900 | 126 | 20 |
| BRANCH BIG MUDDY RIV | Illinois | Fair | 1900 | 126 | 1,750 |
| MOSES LAKE | Illinois | Good | 1900 | 126 | 325 |
| TRIB TO SUGAR CREEK | Illinois | Good | 1900 | 126 | 2,150 |
| TRIB MD FORK | Illinois | Good | 1900 | 126 | 20 |
| TRB AKIN CREEK | Illinois | Good | 1900 | 126 | 50 |
| EWING CK | Illinois | Fair | 1900 | 126 | 20 |
| STREAM | Illinois | Poor | 1900 | 126 | 25 |
| PUT CREEK | Illinois | Fair | 1900 | 126 | 75 |
| BN RR (063478L) | Illinois | Fair | 1900 | 126 | 50 |
| DRAINAGE DITCH | Illinois | Fair | 1900 | 126 | 10 |
| SALINE RIVER | Illinois | Poor | 1900 | 126 | 350 |
| ABANDONED RR | Illinois | Poor | 1900 | 126 | 10 |
| SPILLING CREEK | Illinois | Poor | 1900 | 126 | 150 |
| UNNAMED STREAM | Illinois | Poor | 1900 | 126 | 10 |
| Sheldon Ditch #1 | Illinois | Good | 1900 | 126 | 75 |
| Sheldon Ditch #1 | Illinois | Fair | 1900 | 126 | 75 |
| TRIB OF SPRING CR | Illinois | Poor | 1900 | 126 | 125 |
| DRAINAGE DITCH | Illinois | Poor | 1900 | 126 | 10 |
| CREEK | Illinois | Good | 1900 | 126 | 200 |
| INDIAN CREEK | Illinois | Good | 1900 | 126 | 100 |
| DITCH | Illinois | Fair | 1900 | 126 | 6,500 |
| CREEK | Illinois | Fair | 1900 | 126 | 21,000 |
| UNION PACIFIC RR | Illinois | Fair | 1900 | 126 | 25 |
| BIG ROCK CREEK | Illinois | Fair | 1900 | 126 | 50 |
| VIRGIL DD NO 1 | Illinois | Good | 1900 | 126 | 1,450 |
| CEDAR CR DR DIT | Illinois | Good | 1900 | 126 | 4,450 |
| FOREMAN CREEK | Illinois | Fair | 1900 | 126 | 75 |
| TRIB TO WALNUT CREEK | Illinois | Poor | 1900 | 126 | 25 |
| TRIB TO CALDWELL CRE | Illinois | Fair | 1900 | 126 | 50 |
| CALDWELL CREEK | Illinois | Fair | 1900 | 126 | 25 |
| LITTLERS CREEK | Illinois | Good | 1900 | 126 | 50 |
| FOREMAN CREEK | Illinois | Fair | 1900 | 126 | 10 |
| WALNUT CREEK | Illinois | Poor | 1900 | 126 | 50 |
| TRIB TO SPOON RIVER | Illinois | Fair | 1900 | 126 | 50 |
| INDIAN CREEK | Illinois | Fair | 1900 | 126 | 10 |
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.