Bridge conditions in Jersey County, Illinois
113 inventoried bridges · 6 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
6 of the 113 bridges the federal inventory lists in Jersey County are rated poor; the rest split 64 good and 43 fair.
- 6 of the 113 bridges in Jersey County, Illinois, are rated in poor condition (5.3%) in the 2025 National Bridge Inventory, as of .
- 64 bridges (56.6%) are rated good and 43 (38.1%) fair.
- The median Jersey County bridge was built in 1984.
- The busiest poor-rated bridge is Ill 100 over Elsah Creek (built 1961), carrying about 4,150 vehicles a day.
Good 56.6% · Fair 38.1% · Poor 5.3% of 113 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 100 over Elsah Creek | 1961 | 4,150 | Poor |
| Ill 100 over Drains to Eagle Lake | 1938 | 775 | Poor |
| Tr 187 over Little Piasa Ck | 1972 | 500 | Poor |
| Fas 774 over Otter Creek | 1978 | 225 | Poor |
| Tr 150C over Branch Little Piasa | 1975 | 150 | Poor |
| Tr 195 over Mill Creek | 1977 | 100 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 67 SB over Piasa Creek | 2012 | 12,100 | Good |
| US 67 NB over Piasa Creek | 2012 | 12,100 | Good |
| US 67 over De Arcy Creek | 1921 | 5,300 | Fair |
| Il 100 (NB) over Piasa Creek | 1997 | 5,150 | Fair |
| Ill 100 (SB) over Piasa Creek | 1997 | 5,150 | Good |
| Ill 100 over Elsah Creek | 1961 | 4,150 | Poor |
| Il 109 over Trib to Otter Creek | 1999 | 3,950 | Good |
| Ill 16 over Trib to Boyer Creek | 1925 | 3,750 | Fair |
| Il 109 over Otter Creek | 2004 | 3,700 | Good |
| Ill 100 over Chataqua Creek | 1964 | 3,150 | 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.