Bridge conditions in Franklin County, Illinois
310 inventoried bridges · 9 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Franklin County tracks close to typical: 9 of its 310 inventoried bridges (2.9%) are rated poor, against a national rate of about 7%.
- 9 of the 310 bridges in Franklin County, Illinois, are rated in poor condition (2.9%) in the 2025 National Bridge Inventory, as of .
- 238 bridges (76.8%) are rated good and 63 (20.3%) fair.
- The median Franklin County bridge was built in 1990.
- The busiest poor-rated bridge is Ill 154 over Rend Lake (built 1966), carrying about 2,650 vehicles a day.
Good 76.8% · Fair 20.3% · Poor 2.9% of 310 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 |
|---|---|---|---|
| Ill 154 over Rend Lake | 1966 | 2,650 | Poor |
| Ill 154 over Rend Lake | 1967 | 2,650 | Poor |
| Ill 154 over Rend Lake | 1966 | 2,650 | Poor |
| Ill 34 over Halltown Creek | 1929 | 2,100 | Poor |
| Fau 9452 over Sugar Creek | 1964 | 1,050 | Poor |
| FAS 868 (Ewing Rd) over Sugar Camp Creek | 1936 | 1,050 | Poor |
| Fas 875 over Middle Fork Creek | 1988 | 125 | Poor |
| Tr 229A over Anoy Creek | 1986 | 100 | Poor |
| Tr 388 over Thompson Reservoir | 1900 | 50 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 57 over Tr 213 Linn Rd | 1962 | 37,200 | Fair |
| I 57 over Drain Ditch (rend L) | 1963 | 35,700 | Fair |
| I-57 NB over Pond Creek | 2022 | 19,900 | Fair |
| I-57 SB over Pond Creek | 2022 | 19,900 | Fair |
| Interstate 57 NB over 7TH St | 2012 | 18,600 | Fair |
| Interstate 57 SB over 7TH St | 2012 | 18,600 | Fair |
| Interstate 57 SB over UP RR | 2013 | 18,600 | Good |
| Interstate 57 NB over UP RR | 2013 | 18,600 | Good |
| I 57 NB over M. Fork Big Muddy R | 2024 | 18,600 | Good |
| I 57 SB over M. Fork Big Muddy River | 2024 | 18,600 | Good |
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.