De Witt County Bridge Report Card
De Witt County scores 88 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
De Witt County, Illinois
De Witt County has 192 bridges in the National Bridge Inventory, with 11 rated poor and 0 rated scour-critical. Its poor-condition share of 5.7% is at or below the 9.5% statewide average. Poor-condition bridges carry about 4,325 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives De Witt County a Bridge Condition Exposure Score of 88/100 (B). The county has 192 bridges in the National Bridge Inventory, including 11 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 4,325 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 | 5.7% | 11.5 |
| Poor-condition traffic exposure | 25 | 1.3% of measured traffic | 1.0 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 46 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 333,310 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 | 5.7% |
| State Poor-Condition Share | 9.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 46 years |
| Poor-Condition Traffic Exposure | 4,325 vehicles/day |
Bridges to Watch
Top Bridges to Watch in De Witt County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Il 54 (fap 71) over I-74 | Poor condition + traffic exposure | Poor | 2,800 | 1970 |
| Fau-7331 (walnut S over Ten Mile Creek | Poor condition + traffic exposure | Poor | 600 | 1974 |
| Tr 151 over Coon Creek | Poor condition + traffic exposure | Poor | 350 | 1966 |
| Tr 189 over Coon Creek | Poor condition + traffic exposure | Poor | 150 | 1962 |
| Ms-1090 (webster S over Ten Mile Creek | Poor condition + traffic exposure | Poor | 150 | 1970 |
| Tr 56 over Ten Mile Creek | Poor condition + traffic exposure | Poor | 75 | 1986 |
| Tr 203 over Coon Creek | Poor condition + traffic exposure | Poor | 50 | 1900 |
| Tr 74 over Long Point Creek | Poor condition + traffic exposure | Poor | 50 | 1931 |
| Tr 109 over Ten Mile Creek | Poor condition + traffic exposure | Poor | 50 | 1966 |
| Tr 188 over N Fork Salt Creek | Poor condition + traffic exposure | Poor | 25 | 1911 |
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.