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 |
|---|---|---|---|---|---|
| SANGAMON RIVER | Illinois | Fair | 1926 | 100 | 13,200 |
| M. F. SUGAR CREEK | Illinois | Poor | 1926 | 100 | 50 |
| GRAND POINT CR | Illinois | Fair | 1926 | 100 | 25 |
| SPRING CREEK | Illinois | Fair | 1926 | 100 | 11,600 |
| KISHWAUKEE RIVER | Illinois | Fair | 1926 | 100 | 4,350 |
| BR KILBUCK CR | Illinois | Poor | 1926 | 100 | 475 |
| TRIB TO BEAVER CREEK | Illinois | Fair | 1927 | 99 | 250 |
| TRIB TO BEAVER CREEK | Illinois | Fair | 1927 | 99 | 3,500 |
| RUSH CREEK | Illinois | Fair | 1927 | 99 | 1,400 |
| BRANCH OF PLUM R | Illinois | Fair | 1927 | 99 | 50 |
| BRANCH OF CARROLL CK | Illinois | Fair | 1927 | 99 | 150 |
| LAKE FORK | Illinois | Poor | 1927 | 99 | 20 |
| RR - IHB | Illinois | Poor | 1927 | 99 | 13,700 |
| W FK N BR CHI RIV | Illinois | Fair | 1927 | 99 | 18,900 |
| LITTLE CAL RIVER | Illinois | Good | 1927 | 99 | 7,800 |
| SALT CREEK | Illinois | Fair | 1927 | 99 | 18,200 |
| SPRING CREEK | Illinois | Fair | 1927 | 99 | 9,500 |
| DITCH | Illinois | Fair | 1927 | 99 | 50,800 |
| MARLEY CRK S-XING | Illinois | Good | 1927 | 99 | 6,900 |
| BR OF SALT CREEK | Illinois | Poor | 1927 | 99 | 18,200 |
| S BR CHICAGO RIV | Illinois | Poor | 1927 | 99 | 6,600 |
| SANITARY SHIP CANAL | Illinois | Poor | 1927 | 99 | 50,400 |
| CALUMET RIVER | Illinois | Poor | 1927 | 99 | 3,100 |
| DESPLAINES RIV | Illinois | Fair | 1927 | 99 | 5,650 |
| DRY FORK | Illinois | Good | 1927 | 99 | 3,550 |
| KASKASKIA RIVER | Illinois | Poor | 1927 | 99 | 3,550 |
| FLOUR CREEK | Illinois | Fair | 1927 | 99 | 1,250 |
| MISSISSIPPI RIVER | Illinois | Poor | 1927 | 99 | 2,500 |
| SHAVETAIL CREEK | Illinois | Poor | 1927 | 99 | 1,000 |
| MARTINTON DCH NO 3 | Illinois | Poor | 1927 | 99 | 125 |
| PLUM RIVER | Illinois | Fair | 1927 | 99 | 75 |
| WELCH CREEK | Illinois | Fair | 1927 | 99 | 4,950 |
| DRAINAGE DITCH | Illinois | Poor | 1927 | 99 | 450 |
| SKOKIE RIVER | Illinois | Fair | 1927 | 99 | 15,000 |
| KEMPERS CREEK | Illinois | Fair | 1927 | 99 | 325 |
| VERMILION RIVER | Illinois | Good | 1927 | 99 | 4,100 |
| SHORT POINT CR | Illinois | Fair | 1927 | 99 | 350 |
| SCATTERING POINT | Illinois | Fair | 1927 | 99 | 25 |
| SCATTERING POINT | Illinois | Fair | 1927 | 99 | 75 |
| TRIB SHORT POINT CR | Illinois | Fair | 1927 | 99 | 25 |
| CREEK | Illinois | Fair | 1927 | 99 | 25 |
| NIPPERSINK CREEK | Illinois | Fair | 1927 | 99 | 7,600 |
| NASSA CR. | Illinois | Fair | 1927 | 99 | 300 |
| Paddock Creek Branch | Illinois | Poor | 1927 | 99 | 5,650 |
| Trib to Indian Creek | Illinois | Poor | 1927 | 99 | 8,050 |
| DITCH | Illinois | Fair | 1927 | 99 | 1,200 |
| Dennis Hollow | Illinois | Poor | 1927 | 99 | 1,350 |
| FOUNTAIN CREEK | Illinois | Fair | 1927 | 99 | 3,350 |
| MAUVAISE TERRE CR | Illinois | Good | 1927 | 99 | 2,800 |
| SPOON RIVER | Illinois | Poor | 1927 | 99 | 2,450 |
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.