Bridge conditions in Riley County, Kansas
225 inventoried bridges · 10 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 225 bridges in Riley County: 128 rated good, 87 fair, and 10 poor.
- 10 of the 225 bridges in Riley County, Kansas, are rated in poor condition (4.4%) in the 2025 National Bridge Inventory, as of .
- 128 bridges (56.9%) are rated good and 87 (38.7%) fair.
- The median Riley County bridge was built in 1979.
- The busiest poor-rated bridge is Rs 578 G.3-9.0 over Crooked Creek (built 1925), carrying about 325 vehicles a day.
Good 56.9% · Fair 38.7% · Poor 4.4% of 225 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rs 578 G.3-9.0 over Crooked Creek | 1925 | 325 | Poor |
| W. Ks Av G.4-18.5c over Wildcat Creek | 1920 | 70 | Poor |
| Local K.0-14.3t over Mill Creek | 1920 | 45 | Poor |
| Local K.0-16.4 over Mill Creek | 1945 | 30 | Poor |
| Local P.1-18.3c over Mill Creek | 1920 | 20 | Poor |
| Lasita R B.0-17.9t over Timber Creek | 1930 | 10 | Poor |
| E 56TH Dd.0-28.1t over Deep Creek | 1920 | 10 | Poor |
| Local K.3-19.5t over Mill Creek | 1920 | 5 | Poor |
| Trail North of Z99 over Wildcat Creek | 1950 | 5 | Poor |
| Range 52 Road over Honey Creek | 1965 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| K-113 Hwy over Wildcat Creek | 1993 | 22,777 | Good |
| K113 Hwy over Anderson Ave | 1968 | 16,683 | Good |
| Kimball Ave over Drainage Ditch | 2021 | 11,780 | Good |
| K-18 over Wildcat Creek | 2021 | 11,589 | Good |
| K-18 Hwy WB over K-113 Hwy | 2007 | 11,539 | Good |
| K-18 Hwy EB over K-113 Hwy | 2004 | 11,539 | Good |
| K114 Hwy over Dry Branch | 1928 | 10,889 | Good |
| K-114 Hwy over K-18 Hwy | 2013 | 10,889 | Fair |
| K-114 Hwy over Union Pacific RR | 2011 | 10,889 | Good |
| K18 & Skyway Dr over Airport Channel | 2013 | 10,801 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Kansas: Kansas bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.