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 |
|---|---|---|---|---|---|
| GRAPE CR | Illinois | Poor | 1939 | 87 | 700 |
| LITTLE BONPAS CREEK | Illinois | Fair | 1939 | 87 | 100 |
| DRAINAGE DITCH | Illinois | Good | 1939 | 87 | 325 |
| DAVIDS CR | Illinois | Fair | 1939 | 87 | 175 |
| MIDDLE HENDERSON CR | Illinois | Fair | 1939 | 87 | 100 |
| TURNER CREEK | Illinois | Fair | 1939 | 87 | 950 |
| EMMONS CREEK | Illinois | Fair | 1939 | 87 | 725 |
| EW RR | Illinois | Fair | 1939 | 87 | 2,750 |
| DRAINAGE | Illinois | Fair | 1939 | 87 | 25 |
| CRAB ORCHARD LAKE | Illinois | Fair | 1939 | 87 | 25,600 |
| CRAB ORCHARD LAKE | Illinois | Fair | 1939 | 87 | 23,500 |
| CREEK | Illinois | Fair | 1940 | 86 | 375 |
| ABANDONED RR ROW | Illinois | Fair | 1940 | 86 | 125 |
| UNION SPECIAL DITCH | Illinois | Fair | 1940 | 86 | 50 |
| BR BUREAU CREEK | Illinois | Fair | 1940 | 86 | 125 |
| HICKORY CREEK | Illinois | Fair | 1940 | 86 | 75 |
| ADAMS CREEK | Illinois | Fair | 1940 | 86 | 150 |
| APPLE RIVER | Illinois | Fair | 1940 | 86 | 350 |
| BRANCH OTTER CREEK | Illinois | Good | 1940 | 86 | 25 |
| STREAM | Illinois | Poor | 1940 | 86 | 625 |
| STREAM | Illinois | Fair | 1940 | 86 | 1,000 |
| OHLMAN BRANCH | Illinois | Fair | 1940 | 86 | 150 |
| COTTON CREEK | Illinois | Fair | 1940 | 86 | 500 |
| CORBETT BRANCH | Illinois | Poor | 1940 | 86 | 100 |
| STREAM | Illinois | Fair | 1940 | 86 | 100 |
| MOSQUITO CREEK OVRF | Illinois | Poor | 1940 | 86 | 100 |
| LAKE FORK | Illinois | Fair | 1940 | 86 | 500 |
| CSX RR | Illinois | Poor | 1940 | 86 | 8,100 |
| BIG MUDDY CREEK | Illinois | Good | 1940 | 86 | 250 |
| DR TO SANTA FE DITCH | Illinois | Good | 1940 | 86 | 2,250 |
| PRAIRIE BRANCH | Illinois | Poor | 1940 | 86 | 300 |
| BR OF FLAT BRANCH | Illinois | Good | 1940 | 86 | 500 |
| PRAIRIE BRANCH | Illinois | Good | 1940 | 86 | 1,750 |
| KICKAPOO CREEK | Illinois | Fair | 1940 | 86 | 8,400 |
| DONICA CREEK | Illinois | Fair | 1940 | 86 | 50 |
| BRUSH CREEK | Illinois | Fair | 1940 | 86 | 125 |
| WILLOW CREEK | Illinois | Fair | 1940 | 86 | 29,700 |
| NORTH CREEK | Illinois | Fair | 1940 | 86 | 4,500 |
| LONG RUN CREEK | Illinois | Fair | 1940 | 86 | 7,850 |
| SANITARY&SHIP CANAL | Illinois | Poor | 1940 | 86 | 24,800 |
| S WESTERN AVE | Illinois | Fair | 1940 | 86 | 17,600 |
| MONTROSE AVE | Illinois | Fair | 1940 | 86 | 83,800 |
| FULLERTON AVENUE | Illinois | Fair | 1940 | 86 | 104,600 |
| LASALLE DR | Illinois | Fair | 1940 | 86 | 123,600 |
| DIVERSEY HARBOR INLT | Illinois | Fair | 1940 | 86 | 110,300 |
| PEDESTRIAN UNDERPASS | Illinois | Fair | 1940 | 86 | 110,300 |
| UNION PACIFIC RR | Illinois | Fair | 1940 | 86 | 1,850 |
| UNION PACIFIC RR | Illinois | Good | 1940 | 86 | 800 |
| UNION PACIFIC RR | Illinois | Good | 1940 | 86 | 1,050 |
| UNION PACIFIC RR | Illinois | Poor | 1940 | 86 | 1,800 |
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.