Calhoun County Bridge Report Card
Calhoun County scores 88 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Calhoun County, Illinois
Calhoun County has 81 bridges in the National Bridge Inventory, with 4 rated poor and 0 rated scour-critical. Its poor-condition share of 4.9% is at or below the 9.5% statewide average. Poor-condition bridges carry about 1,300 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Calhoun County a Bridge Condition Exposure Score of 88/100 (B). The county has 81 bridges in the National Bridge Inventory, including 4 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 1,300 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 4.9% | 9.9 |
| Poor-condition traffic exposure | 25 | 3.4% of measured traffic | 2.6 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 42 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 38,125 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 4.9% |
| State Poor-Condition Share | 9.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 42 years |
| Poor-Condition Traffic Exposure | 1,300 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Calhoun County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Fas 754 over Stream | Poor condition + traffic exposure | Poor | 1,000 | 1931 |
| Fas 755 (ch2) over Irish Hollow Creek | Poor condition + traffic exposure | Poor | 225 | 1977 |
| Tr 27 over West Panther Creek | Poor condition + traffic exposure | Poor | 50 | 1983 |
| Tr 4a over Bay Creek | Poor condition + traffic exposure | Poor | 25 | 1930 |
| Illinois 100 over Poor Farm Hollow Crk | High traffic | Good | 3,400 | 1996 |
| Park ST In Hardin over Geske Hollow Creek | High traffic | Good | 3,250 | 2006 |
| Ill 100 over Godar Hollow Creek | High traffic | Good | 2,300 | 1996 |
| Il 100 over Mccauley RD Creek | High traffic | Good | 1,750 | 2002 |
| Ill 100 over Michael Creek | High traffic | Good | 1,350 | 1996 |
| Il 100 over Crater Creek | High traffic | Good | 1,350 | 1996 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.