Jackson County Bridge Report Card
Jackson County scores 81 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Jackson County, Illinois
Jackson County has 228 bridges in the National Bridge Inventory, with 16 rated poor and 0 rated scour-critical. Its poor-condition share of 7.0% is at or below the 9.5% statewide average. Poor-condition bridges carry about 36,935 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Jackson County a Bridge Condition Exposure Score of 81/100 (B). The county has 228 bridges in the National Bridge Inventory, including 16 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 36,935 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 | 7.0% | 14.0 |
| Poor-condition traffic exposure | 25 | 7.1% of measured traffic | 5.3 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 37 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 521,355 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 | 7.0% |
| State Poor-Condition Share | 9.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 37 years |
| Poor-Condition Traffic Exposure | 36,935 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Jackson County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Il-13 EB over Big Muddy River | Poor condition + traffic exposure | Poor | 16,600 | 2014 |
| US 51 over Cnic Rr | Poor condition + traffic exposure | Poor | 5,150 | 1983 |
| Fau 9707 (unmarked over Craborchard Creek | Poor condition + traffic exposure | Poor | 3,500 | 1920 |
| Ch 13-chatauqua ST over Little Crab Orch CR | Poor condition + traffic exposure | Poor | 2,700 | 1976 |
| College ST over Piles Fork | Poor condition + traffic exposure | Poor | 1,700 | 1971 |
| Fas 1919-ch 30 over Indian Creek | Poor condition + traffic exposure | Poor | 1,300 | 1982 |
| Ill 3 over Drainage Ditch | Poor condition + traffic exposure | Poor | 900 | 1933 |
| Ill 3 over Worthen Bayou | Poor condition + traffic exposure | Poor | 900 | 1958 |
| Ill 151 over Spring Creek | Poor condition + traffic exposure | Poor | 850 | 1935 |
| Old US 51 (unmarke over Clay Lick Branch | Poor condition + traffic exposure | Poor | 850 | 1958 |
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.