Hamilton County Bridge Report Card
Hamilton County scores 93 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Hamilton County, Illinois
Hamilton County has 169 bridges in the National Bridge Inventory, with 4 rated poor and 0 rated scour-critical. Its poor-condition share of 2.4% is at or below the 9.5% statewide average. Poor-condition bridges carry about 3,400 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Hamilton County a Bridge Condition Exposure Score of 93/100 (A). The county has 169 bridges in the National Bridge Inventory, including 4 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 3,400 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 | 2.4% | 4.7 |
| Poor-condition traffic exposure | 25 | 3.6% of measured traffic | 2.7 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 35 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 93,375 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 | 2.4% |
| State Poor-Condition Share | 9.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 35 years |
| Poor-Condition Traffic Exposure | 3,400 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Hamilton County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Fap-853 (ill-14) over Bear Creek | Poor condition + traffic exposure | Poor | 3,200 | 1923 |
| Tr-324 over Contrary Creek | Poor condition + traffic exposure | Poor | 75 | 1909 |
| Tr-95 over Trib Big Creek | Poor condition + traffic exposure | Poor | 75 | 1909 |
| Tr-173 over Trib Lost Creek Drai | Poor condition + traffic exposure | Poor | 50 | 1981 |
| Il 14 over Stream | High traffic | Good | 4,300 | 2018 |
| Fap-855 (ill-14) over Lakey Creek | High traffic | Fair | 3,200 | 1923 |
| Fap-776 (ill 142) over Stream | High traffic | Good | 3,150 | 1992 |
| Fap-849 (ill-142) over Middle Creek | High traffic | Fair | 2,700 | 1929 |
| Fap-849 (ill-142) over Stream | High traffic | Fair | 2,700 | 1929 |
| Fap-849 (ill-142) over Stream | High traffic | Good | 2,700 | 1993 |
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.