Bridge conditions in Piatt County, Illinois
246 inventoried bridges · 14 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
14 of the 246 bridges the federal inventory lists in Piatt County are rated poor; the rest split 137 good and 95 fair.
- 14 of the 246 bridges in Piatt County, Illinois, are rated in poor condition (5.7%) in the 2025 National Bridge Inventory, as of .
- 137 bridges (55.7%) are rated good and 95 (38.6%) fair.
- The median Piatt County bridge was built in 1980.
- The busiest poor-rated bridge is I-72 (EB) over Norfolk Southern Railway (built 1975), carrying about 5,450 vehicles a day.
Good 55.7% · Fair 38.6% · Poor 5.7% of 246 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-72 (EB) over Norfolk Southern Railway | 1975 | 5,450 | Poor |
| I-72 (WB) over Norfolk Southern Railway | 1975 | 5,450 | Poor |
| Ill 10(FAP 721) over W Br Goose Creek | 1977 | 1,600 | Poor |
| Sbi 10 (fas 1532) over I-72 | 1962 | 925 | Poor |
| Ch 12 over Stream | 1939 | 250 | Poor |
| Tr 27 over Madden Creek | 1962 | 150 | Poor |
| Tr 59 over Goose Creek | 1965 | 75 | Poor |
| Tr 171 over Lake Fork | 1964 | 75 | Poor |
| Tr 135 over Drainage Ditch | 1955 | 50 | Poor |
| Tr 156(FAS 1530) over Drainage Ditch | 1962 | 50 | Poor |
| Tr 56 over Stream | 1969 | 50 | Poor |
| Tr 4 over Stream | 1978 | 50 | Poor |
| Tr 126 over Lakefork Drainage | 1967 | 25 | Poor |
| Tr 207 over Stream | 1978 | 25 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-74 over Madden Creek Trib | 1971 | 22,800 | Good |
| I-74 over Madden Creek Trib | 1971 | 22,800 | Fair |
| I-74 over Stream | 1970 | 21,500 | Fair |
| I-72 over Stream | 1976 | 11,400 | Fair |
| I-72 over Wolf Run | 1976 | 11,400 | Fair |
| I-74 (EB) over S Branch Salt Creek | 1970 | 10,750 | Fair |
| I-74 (WB) over S Branch Salt Creek | 1970 | 10,750 | Fair |
| I-74 (EB) over NS Railway & Madden Cree | 1970 | 10,750 | Good |
| I-74 (WB) over NS Railway & Madden Cree | 1970 | 10,750 | Fair |
| I-72 (EB) over IC RR - Abandoned | 1962 | 6,700 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Illinois: Illinois bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.