Bridge Safety in Illinois
26,927 bridges — 2,563 Poor condition — avg age 45 years.
Bridge Inventory
| Total Bridges | 26,927 |
| Good Condition | 12,012 |
| Fair Condition | 12,352 |
| Poor Condition | 2,563 |
| Oldest Bridge | Built 1863 |
| Average Age | 45 years |
Condition Summary
| % Good | 44.6% |
| % Fair | 45.9% |
| % Poor | 9.5% |
Highest-Traffic Poor Condition Bridges in Illinois
Poor condition bridges sorted by daily traffic — the most urgent safety concerns.
| Bridge | Condition | Year Built | ADT | Length |
|---|---|---|---|---|
| CANAL TO STEWART STS | Poor | 1962 | 245,500 | — |
| RR - IHB & CSXT | Poor | 1949 | 178,600 | — |
| GREENWOOD AVE | Poor | 1947 | 152,900 | — |
| LITTLE CAL RIVER | Poor | 1947 | 152,900 | — |
| KIRCHOFF RD | Poor | 1963 | 123,700 | — |
| KIRCHOFF RD | Poor | 1963 | 123,700 | — |
| US 14 NW HWY & UP RR | Poor | 1964 | 113,400 | — |
| INDUSTRIAL AVE | Poor | 1963 | 113,400 | — |
| US 14&UPRR FAU3512 | Poor | 1964 | 113,400 | — |
| INDUSTRIAL AVE | Poor | 1963 | 113,400 | — |
| TRRA | Poor | 1966 | 113,200 | — |
| PALATINE RD | Poor | 1964 | 105,100 | — |
| PALATINE RD | Poor | 1964 | 105,100 | — |
| WACKER DRIVE | Poor | 1986 | 102,000 | — |
| MAIN BR CHICAGO RIV | Poor | 1937 | 102,000 | — |
| BELMONT AV | Poor | 1941 | 101,600 | — |
| LAND | Poor | 1986 | 95,000 | — |
| IRVING PARK RD | Poor | 1967 | 94,800 | — |
| Lower LSD & Land | Poor | 1986 | 94,400 | — |
| I-294 TRI STATE TOLL | Poor | 1959 | 92,200 | — |
Oldest Bridges in Illinois
| Bridge | Condition | Year Built | Age | ADT |
|---|---|---|---|---|
| BUREAU CREEK | Poor | 1863 | 163 yrs | 275 |
| AUX SABLE CR | Fair | 1873 | 153 yrs | 200 |
| MISS RIV/RR/MSS6000 | Fair | 1874 | 152 yrs | 6,550 |
| MAEYSTOWN CREEK | Fair | 1881 | 145 yrs | 1,550 |
| BAY CREEK | Fair | 1885 | 141 yrs | 225 |
| E FORK PLUM RIVER | Poor | 1886 | 140 yrs | 25 |
| APPLE CREEK | Good | 1890 | 136 yrs | 25 |
| BR OF OAT CREEK | Poor | 1890 | 136 yrs | 25 |
| TRIB TO KANKAKEE R. | Fair | 1890 | 136 yrs | 550 |
| JACKSON PK LAGOON IN | Fair | 1891 | 135 yrs | 36,700 |
Bridge Safety in Illinois
Bridge condition data for Illinois comes from the FHWA National Bridge Inventory. All publicly accessible bridges with a span over 20 feet are inspected at least every 24 months by certified bridge inspectors.