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 |
|---|---|---|---|---|---|
| WADDAMS CREEK | Illinois | Fair | 1938 | 88 | 75 |
| DITCH | Illinois | Fair | 1938 | 88 | 25 |
| BLUEGRASS CREEK | Illinois | Fair | 1938 | 88 | 350 |
| STREAM | Illinois | Fair | 1938 | 88 | 18,800 |
| STREAM | Illinois | Fair | 1938 | 88 | 4,100 |
| STONY CREEK | Illinois | Good | 1938 | 88 | 2,650 |
| STONY CREEK | Illinois | Fair | 1938 | 88 | 3,450 |
| SUGAR CREEK | Illinois | Fair | 1938 | 88 | 4,050 |
| LITTLE ROCK CREEK | Illinois | Poor | 1938 | 88 | 100 |
| CRAB ORCHARD LAKE | Illinois | Good | 1938 | 88 | 6,150 |
| ROCK RIVER | Illinois | Fair | 1938 | 88 | 22,600 |
| LITTLE GRASSY LK SPILLWY | Illinois | Fair | 1939 | 87 | 800 |
| Walnut Fork Creek | Illinois | Fair | 1939 | 87 | 75 |
| ELKHORN CREEK | Illinois | Poor | 1939 | 87 | 1,050 |
| Salt Fork River | Illinois | Good | 1939 | 87 | 5,550 |
| COTTON CREEK | Illinois | Fair | 1939 | 87 | 500 |
| BIG MUDDY CREEK | Illinois | Fair | 1939 | 87 | 250 |
| BRANCH SUGAR | Illinois | Fair | 1939 | 87 | 450 |
| POPLAR CREEK | Illinois | Fair | 1939 | 87 | 18,800 |
| RANGE CREEK | Illinois | Good | 1939 | 87 | 100 |
| WOLF CREEK | Illinois | Fair | 1939 | 87 | 3,400 |
| MORRIS CREEK | Illinois | Fair | 1939 | 87 | 3,400 |
| STREAM | Illinois | Fair | 1939 | 87 | 3,250 |
| STREAM | Illinois | Fair | 1939 | 87 | 3,250 |
| LITTLE SALT CREEK | Illinois | Good | 1939 | 87 | 1,300 |
| BISHOP CREEK | Illinois | Good | 1939 | 87 | 850 |
| DISMAL CREEK | Illinois | Good | 1939 | 87 | 800 |
| BIG CREEK | Illinois | Poor | 1939 | 87 | 300 |
| CREEK | Illinois | Good | 1939 | 87 | 200 |
| APPLE CREEK | Illinois | Fair | 1939 | 87 | 2,150 |
| LICK CREEK South | Illinois | Fair | 1939 | 87 | 2,150 |
| CREEK | Illinois | Good | 1939 | 87 | 400 |
| LONG CREEK | Illinois | Fair | 1939 | 87 | 2,150 |
| HOG RUN | Illinois | Poor | 1939 | 87 | 1,100 |
| BILLS RUN | Illinois | Poor | 1939 | 87 | 1,100 |
| WAUPECON CREEK | Illinois | Poor | 1939 | 87 | 1,100 |
| N BR LANGAN CR | Illinois | Fair | 1939 | 87 | 50 |
| SHAVETAIL CR | Illinois | Fair | 1939 | 87 | 25 |
| PRAIRIE CR | Illinois | Fair | 1939 | 87 | 50 |
| HALLS CREEK | Illinois | Fair | 1939 | 87 | 2,800 |
| FOX RIVER | Illinois | Fair | 1939 | 87 | 175 |
| SCRUB CREEK | Illinois | Fair | 1939 | 87 | 25 |
| FOX RIVER | Illinois | Poor | 1939 | 87 | 12,400 |
| EXLINE SLOUGH | Illinois | Fair | 1939 | 87 | 1,700 |
| LONE STAR CEMENT RR | Illinois | Fair | 1939 | 87 | 4,250 |
| STREAM | Illinois | Fair | 1939 | 87 | 50 |
| ILL & MICH CANAL | Illinois | Fair | 1939 | 87 | 5,800 |
| LITTLE BONPAS CREEK | Illinois | Poor | 1939 | 87 | 1,100 |
| UP RR | Illinois | Good | 1939 | 87 | 2,950 |
| BIG BUREAU CREEK | Illinois | Poor | 1939 | 87 | — |
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.