Perry County Bridge Report Card
Perry County scores 79 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Perry County, Illinois
Perry County has 136 bridges in the National Bridge Inventory, with 10 rated poor and 0 rated scour-critical. Its poor-condition share of 7.4% is at or below the 9.5% statewide average. Poor-condition bridges carry about 9,365 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Perry County a Bridge Condition Exposure Score of 79/100 (C). The county has 136 bridges in the National Bridge Inventory, including 10 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 9,365 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 | 7.4% | 14.7 |
| Poor-condition traffic exposure | 25 | 8.7% of measured traffic | 6.5 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 44 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 107,855 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 | 7.4% |
| State Poor-Condition Share | 9.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 44 years |
| Poor-Condition Traffic Exposure | 9,365 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Perry County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Ill 154 over Beaucoup Creek | Poor condition + traffic exposure | Poor | 5,750 | 1962 |
| Fas-1824 (ch-27) over Sixmile Creek | Poor condition + traffic exposure | Poor | 1,000 | 1900 |
| Fas 835-ch 12 over Mud Creek | Poor condition + traffic exposure | Poor | 900 | 1958 |
| Co HWY 1 over White Walnut Creek | Poor condition + traffic exposure | Poor | 675 | 1959 |
| Co HWY 1 over Little Beaucoup Crk | Poor condition + traffic exposure | Poor | 525 | 1959 |
| Ch 8-kimzey Road over Reese Creek | Poor condition + traffic exposure | Poor | 225 | 1988 |
| Co HWY 11 over Beaucoup Creek | Poor condition + traffic exposure | Poor | 200 | 1955 |
| Tr 110 over Galum Creek | Poor condition + traffic exposure | Poor | 50 | 1900 |
| Tr 330 over Hog Creek | Poor condition + traffic exposure | Poor | 20 | 1940 |
| County Highway 16 over Trib To Hog Creek | Poor condition + traffic exposure | Poor | 20 | 1985 |
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.