Bridge conditions in Washington County, Kansas
335 inventoried bridges · 12 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
12 of the 335 bridges the federal inventory lists in Washington County are rated poor; the rest split 189 good and 134 fair.
- 12 of the 335 bridges in Washington County, Kansas, are rated in poor condition (3.6%) in the 2025 National Bridge Inventory, as of .
- 189 bridges (56.4%) are rated good and 134 (40.0%) fair.
- The median Washington County bridge was built in 1981.
- The busiest poor-rated bridge is Rs 1104 P-24.2 over Trib. to Peats Creek (built 1925), carrying about 460 vehicles a day.
Good 56.4% · Fair 40.0% · Poor 3.6% of 335 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 1104 P-24.2 over Trib. to Peats Creek | 1925 | 460 | Poor |
| K22 Hwy over Mulberry Creek | 1949 | 232 | Poor |
| 13-k.7 329 over Melvin Creek | 1950 | 40 | Poor |
| 8.6-aa.1 335 over Trib to Little Blue Rv | 1940 | 40 | Poor |
| O-14.6 159 over Trib. to Camp Creek | 1920 | 30 | Poor |
| Q-2.8 33 over Joy Creek | 1975 | 30 | Poor |
| 12-s.8 115 over Trib. to Mill Creek | 1920 | 30 | Poor |
| A-10.95 54 over Cherry Creek | 1970 | 20 | Poor |
| Dd-20.95 197 over Trib. Little Blue River | 1920 | 20 | Poor |
| 4-l.5 29 over Trib. to Riddle Creek | 1925 | 15 | Poor |
| 29-r.2 298 over Carter Creek | 1930 | 15 | Poor |
| 31-u.8 302 over Deadman Creek | 1945 | 10 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US36 Hwy over Mill Creek Drainage | 1936 | 2,657 | Fair |
| US36 over Mill Creek | 1999 | 2,657 | Good |
| US36 Hwy over Little Blue River Drg. | 1938 | 2,452 | Good |
| US36 over Lane Branch Creek | 1999 | 2,452 | Good |
| U36 over Little Blue River | 1999 | 2,452 | Good |
| K15 Hwy over Mill Creek | 2020 | 2,329 | Good |
| US36 Hwy over Buffalo Creek | 1941 | 1,924 | Good |
| US-36 Hwy over Camp Creek | 1994 | 1,924 | Good |
| US-36 Hwy over Camp Creek | 1994 | 1,924 | Good |
| US-36 Hwy over Mill Creek | 1994 | 1,924 | 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.