Bridge conditions in Marion County, Illinois
294 inventoried bridges · 22 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
22 of the 294 bridges the federal inventory lists in Marion County are rated poor; the rest split 182 good and 90 fair.
- 22 of the 294 bridges in Marion County, Illinois, are rated in poor condition (7.5%) in the 2025 National Bridge Inventory, as of .
- 182 bridges (61.9%) are rated good and 90 (30.6%) fair.
- The median Marion County bridge was built in 1981.
- The busiest poor-rated bridge is Fai-57 NB over Crooked Creek (built 1968), carrying about 9,650 vehicles a day.
Good 61.9% · Fair 30.6% · Poor 7.5% of 294 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 |
|---|---|---|---|
| Fai-57 NB over Crooked Creek | 1968 | 9,650 | Poor |
| Fai-57 SB over Crooked Creek | 1968 | 9,650 | Poor |
| I-57 SB over Csxrr | 1968 | 9,650 | Poor |
| Fai-57 SB over US-50 | 1968 | 8,350 | Poor |
| Il 161 - Fap 805 over Fai-57 | 1968 | 3,900 | Poor |
| Old US 51 (fas 179 over Crooked Creek | 1954 | 1,450 | Poor |
| Fas-789 over Jamison Creek | 1954 | 1,400 | Poor |
| Fas-2791 over Raccoon Creek | 1909 | 375 | Poor |
| Tr-114 over Zion Hill Branch | 1909 | 300 | Poor |
| Old US 51 (sbi 2A) over Lost Creek | 1920 | 175 | Poor |
| Tr-26 over Flat Creek | 1909 | 150 | Poor |
| Tr-6 over Coles Creek | 1909 | 100 | Poor |
| Tr-6 over Lost Creek | 1959 | 100 | Poor |
| Ch-38 over North Fork Creek | 1909 | 75 | Poor |
| Tr-6 over East Fork Kaskaskia | 1961 | 75 | Poor |
| Tr-156 over Davidson Creek | 1909 | 25 | Poor |
| Tr-358 over Kaskaskia River | 1909 | 25 | Poor |
| Tr-405 over Raccoon Creek | 1971 | 25 | Poor |
| Tr 171 over Skillet Fork | 1976 | 25 | Poor |
| Tr-213 over Lost Creek | 1972 | 25 | Poor |
| Or-6137 (pub Prk R over Mountain Branch | 1965 | 25 | Poor |
| Tr-445a over Icg RR | 1909 | 10 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fai-57 over Raccoon Creek | 1966 | 21,000 | Good |
| Fai-57 over Br E Fork Kaskaskia | 1970 | 18,100 | Good |
| Fai-57 over S Trib E Br Kask Rvr | 1969 | 18,100 | Good |
| Fai-57 over N Trib E Br Kask Rvr | 1969 | 18,100 | Good |
| US 50 over Vermillion Creek | 1994 | 10,300 | Good |
| Fai-57 NB over Crooked Creek | 1968 | 9,650 | Poor |
| Fai-57 SB over Crooked Creek | 1968 | 9,650 | Poor |
| I-57 NB over Abandoned M&IRR(UPRR) | 1968 | 9,650 | Fair |
| I-57 SB over Abandoned M&IRR(UPRR) | 1968 | 9,650 | Fair |
| I-57 NB over Csxrr | 1969 | 9,650 | 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.