Washington County Bridge Report Card
Washington County scores 80 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Washington County, Illinois
Washington County has 234 bridges in the National Bridge Inventory, with 14 rated poor and 1 rated scour-critical. Its poor-condition share of 6.0% is at or below the 9.5% statewide average. Poor-condition bridges carry about 39,570 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Washington County a Bridge Condition Exposure Score of 80/100 (B). The county has 234 bridges in the National Bridge Inventory, including 14 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 39,570 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 | 6.0% | 12.0 |
| Poor-condition traffic exposure | 25 | 8.3% of measured traffic | 6.2 |
| Scour-critical bridge share | 20 | 0.4% | 0.9 |
| Average age vs national baseline | 10 | 51 years vs 48 nationally | 1.4 |
| Traffic-data completeness | 5 | 478,645 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 | 6.0% |
| State Poor-Condition Share | 9.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.4% |
| Average Bridge Age | 51 years |
| Poor-Condition Traffic Exposure | 39,570 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Washington County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| I-64 EB over Prairie RD Abandoned Upr | Poor condition + traffic exposure | Poor | 14,000 | 1972 |
| I-64 WB over Prairie RD Abandoned Upr | Poor condition + traffic exposure | Poor | 14,000 | 1972 |
| Ill 127 over Fai-64 | Poor condition + traffic exposure | Poor | 10,100 | 1971 |
| Ch 27 over Willow Creek | Poor condition + traffic exposure | Poor | 625 | 1960 |
| Tr 279 over South Fork Mud Creek | Poor condition + traffic exposure | Poor | 350 | 1925 |
| Ch 7 over Beaucoup Creek | Poor condition + traffic exposure | Poor | 275 | 1977 |
| Tr 102 over Br Williams CR | Poor condition + traffic exposure | Poor | 50 | 1920 |
| Tr 13 over Herzog Creek | Poor condition + traffic exposure | Poor | 50 | 1957 |
| Tr-239 over Br Of Elkhorn Creek | Poor condition + traffic exposure | Poor | 25 | 1915 |
| Tr 190 over Br North Creek | Poor condition + traffic exposure | Poor | 25 | 1920 |
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.