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 |
|---|---|---|---|---|---|
| RR - CN | Illinois | Fair | 1935 | 91 | 24,100 |
| HURRICANE CR BRANCH | Illinois | Fair | 1935 | 91 | 1,700 |
| CAMP CREEK | Illinois | Fair | 1935 | 91 | 700 |
| LYNN CREEK | Illinois | Fair | 1935 | 91 | 250 |
| LITTLE CREEK | Illinois | Poor | 1935 | 91 | 125 |
| TRIB BECKS CREEK | Illinois | Fair | 1935 | 91 | 150 |
| BEAR CREEK | Illinois | Fair | 1935 | 91 | 75 |
| CAMP CREEK | Illinois | Fair | 1935 | 91 | 20 |
| SUCK CREEK | Illinois | Fair | 1935 | 91 | 50 |
| TRIB LONE GROVE BR | Illinois | Fair | 1935 | 91 | 50 |
| Trib. Dismal Creek | Illinois | Fair | 1935 | 91 | 50 |
| TRIB DISMAL CREEK | Illinois | Fair | 1935 | 91 | 150 |
| STREAM | Illinois | Good | 1935 | 91 | 125 |
| KERTON CR | Illinois | Fair | 1935 | 91 | 550 |
| THOMPSON LAKE DIT | Illinois | Fair | 1935 | 91 | 10 |
| STREAM | Illinois | Fair | 1935 | 91 | 1,850 |
| CHANEY CREEK | Illinois | Fair | 1935 | 91 | 1,650 |
| HARRIS CREEK | Illinois | Fair | 1935 | 91 | 1,100 |
| BR OF ROCK CR | Illinois | Fair | 1935 | 91 | 1,100 |
| GREEN RIVER TRIB | Illinois | Poor | 1935 | 91 | 150 |
| MUD CREEK | Illinois | Fair | 1935 | 91 | 225 |
| SPRING CREEK | Illinois | Fair | 1935 | 91 | 850 |
| AUSTIN CREEK | Illinois | Poor | 1935 | 91 | 750 |
| SPRING CREEK | Illinois | Poor | 1935 | 91 | 850 |
| JOHNSON CREEK | Illinois | Fair | 1935 | 91 | 750 |
| CREEK | Illinois | Fair | 1935 | 91 | 850 |
| DRAINAGE | Illinois | Fair | 1935 | 91 | 775 |
| OTTER CREEK | Illinois | Good | 1935 | 91 | 175 |
| OTTER CREEK | Illinois | Good | 1935 | 91 | 175 |
| CLEAR CREEK | Illinois | Poor | 1935 | 91 | 125 |
| MILL CREEK | Illinois | Fair | 1935 | 91 | 21,500 |
| FOX RIVER | Illinois | Fair | 1935 | 91 | 15,500 |
| FOURMILE GROVE | Illinois | Fair | 1935 | 91 | 250 |
| PRAIRIE CREEK | Illinois | Fair | 1935 | 91 | 450 |
| OTTER CREEK | Illinois | Good | 1935 | 91 | 1,700 |
| Ida Creek | Illinois | Poor | 1935 | 91 | 200 |
| DRAINAGE DITCH | Illinois | Fair | 1935 | 91 | 10 |
| DRAINAGE DITCH | Illinois | Fair | 1935 | 91 | 25 |
| WOLFDEN CR | Illinois | Fair | 1935 | 91 | 50 |
| MATODD BRANCH | Illinois | Fair | 1935 | 91 | 50 |
| BR CROW CREEK | Illinois | Good | 1935 | 91 | 75 |
| SNAG CREEK | Illinois | Poor | 1935 | 91 | 50 |
| FOUNTAIN CK | Illinois | Fair | 1935 | 91 | 200 |
| BNSF & UPRR KICKAPOO | Illinois | Poor | 1935 | 91 | 8,100 |
| BNSF (094069E) | Illinois | Fair | 1935 | 91 | 1,850 |
| BETTELL CREEK | Illinois | Fair | 1935 | 91 | 500 |
| MOORE CREEK | Illinois | Good | 1935 | 91 | 700 |
| BUCKHORN CREEK | Illinois | Fair | 1935 | 91 | 500 |
| DRAINAGE DITCH | Illinois | Fair | 1935 | 91 | 650 |
| Metrolink | Illinois | Good | 1935 | 91 | 14,700 |
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.