Ogle County Bridge Report Card
Ogle County scores 82 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Ogle County, Illinois
Ogle County has 378 bridges in the National Bridge Inventory, with 28 rated poor and 4 rated scour-critical. Its poor-condition share of 7.4% is at or below the 9.5% statewide average. Poor-condition bridges carry about 10,300 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Ogle County a Bridge Condition Exposure Score of 82/100 (B). The county has 378 bridges in the National Bridge Inventory, including 28 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 10,300 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 | 7.4% | 14.8 |
| Poor-condition traffic exposure | 25 | 1.3% of measured traffic | 1.0 |
| Scour-critical bridge share | 20 | 1.1% | 2.1 |
| Average age vs national baseline | 10 | 44 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 778,750 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 | 1.1% |
| Average Bridge Age | 44 years |
| Poor-Condition Traffic Exposure | 10,300 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Ogle County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Seventh Avenue over Kyte Creek | Poor condition + traffic exposure | Poor | 1,600 | 1966 |
| First Avenue over Kyte Creek | Poor condition + traffic exposure | Poor | 1,550 | 1978 |
| So Second Street over Kyte Creek | Poor condition + traffic exposure | Poor | 125 | 1975 |
| Lakeview Drive over Kyte Creek | Poor condition + traffic exposure | Poor | 1,750 | 1963 |
| Mulford RD over Kilbuck CR | Poor condition + traffic exposure | Poor | 750 | 1979 |
| Mill Road over Mill Creek | Poor condition + traffic exposure | Poor | 600 | 1980 |
| Big Mound Road over Kilbuck Creek | Poor condition + traffic exposure | Poor | 500 | 1981 |
| Junction Road over Drainage Ditch | Poor condition + traffic exposure | Poor | 425 | 1978 |
| Hemstock Road over Unnamed Stream | Poor condition + traffic exposure | Poor | 400 | 1980 |
| Big Mound Road over Stillman Creek | Poor condition + traffic exposure | Poor | 300 | 1981 |
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.