Bridge conditions in Doniphan County, Kansas
128 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
11 of the 128 bridges the federal inventory lists in Doniphan County are rated poor; the rest split 65 good and 52 fair.
- 11 of the 128 bridges in Doniphan County, Kansas, are rated in poor condition (8.6%) in the 2025 National Bridge Inventory, as of .
- 65 bridges (50.8%) are rated good and 52 (40.6%) fair.
- The median Doniphan County bridge was built in 1984.
- The busiest poor-rated bridge is Rs 2128 over Mission Creek (built 1939), carrying about 2,435 vehicles a day.
Good 50.8% · Fair 40.6% · Poor 8.6% of 128 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 2128 over Mission Creek | 1939 | 2,435 | Poor |
| K7 Hwy over Mill Creek | 1949 | 426 | Poor |
| Rs 201 over Stream | 1959 | 175 | Poor |
| Local T-831-2 over C. R.i.& &. Railroad | 1923 | 100 | Poor |
| Rs 1784 over Stream | 1973 | 66 | Poor |
| Minor T-35-1 over Squaw Creek | 1968 | 40 | Poor |
| Local T-433-1 over Duncan Creek | 1923 | 35 | Poor |
| Local T-538-2 over Trib. to Missouri River | 1970 | 10 | Poor |
| Local T-731-1 over Mosquito Creek | 1920 | 5 | Poor |
| Local T-723-1 over Trib. to Missouri River | 1965 | 5 | Poor |
| Local T-228-3 over Cottonwood Creek | 1900 | 2 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-36 Hwy WB over Old K-238 Hwy | 1983 | 8,413 | Good |
| US 36 W over Missouri Rvr | 1983 | 8,227 | Fair |
| US 36 E over Missouri Rvr | 1983 | 7,009 | Fair |
| US-36 Hwy EB over Old K-238 Hwy | 1983 | 5,848 | Good |
| US36 Hwy over Williams Creek | 1953 | 5,531 | Good |
| US36 Hwy over Peters Creek Drainage | 1953 | 5,531 | Fair |
| US36 Hwy over Peters Creek Drainage | 1984 | 4,977 | Good |
| US36 Hwy over K136 Hwy | 1989 | 4,977 | Good |
| WB US-36 Hwy over 165th Street | 1983 | 4,658 | Good |
| US36 Hwy EB over 165th Street | 2004 | 4,658 | 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.