Riley County Bridge Report Card
Riley County scores 88 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Riley County, Kansas
Riley County has 225 bridges in the National Bridge Inventory, with 10 rated poor and 3 rated scour-critical. Its poor-condition share of 4.4% is at or below the 5.2% statewide average. Poor-condition bridges carry about 525 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Riley County a Bridge Condition Exposure Score of 88/100 (B). The county has 225 bridges in the National Bridge Inventory, including 10 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 525 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 | 4.4% | 8.9 |
| Poor-condition traffic exposure | 25 | 0.1% of measured traffic | 0.1 |
| Scour-critical bridge share | 20 | 1.3% | 2.7 |
| Average age vs national baseline | 10 | 49 years vs 48 nationally | 0.6 |
| Traffic-data completeness | 5 | 389,637 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 | 4.4% |
| State Poor-Condition Share | 5.2% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.3% |
| Average Bridge Age | 49 years |
| Poor-Condition Traffic Exposure | 525 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Riley County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Rs 578 G.3-9.0 over Crooked Creek | Poor condition + traffic exposure | Poor | 325 | 1925 |
| W. Ks Av G.4-18.5c over Wildcat Creek | Poor condition + traffic exposure | Poor | 70 | 1920 |
| Local K.0-14.3t over Mill Creek | Poor condition + traffic exposure | Poor | 45 | 1920 |
| Local K.0-16.4 over Mill Creek | Poor condition + traffic exposure | Poor | 30 | 1945 |
| Local P.1-18.3c over Mill Creek | Poor condition + traffic exposure | Poor | 20 | 1920 |
| E 56th Dd.0-28.1t over Deep Creek | Poor condition + traffic exposure | Poor | 10 | 1920 |
| Lasita R B.0-17.9t over Timber Creek | Poor condition + traffic exposure | Poor | 10 | 1930 |
| Local K.3-19.5t over Mill Creek | Poor condition + traffic exposure | Poor | 5 | 1920 |
| Trail North Of Z99 over Wildcat Creek | Poor condition + traffic exposure | Poor | 5 | 1950 |
| Range 52 Road over Honey Creek | Poor condition + traffic exposure | Poor | 5 | 1965 |
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.