Local T-731-1 over Mosquito Creek
Doniphan County, Kansas · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Local T-731-1 over Mosquito Creek in Doniphan County, Kansas, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1920, making it 105 years old at the 2025 inventory.
- It carries about 5 vehicles a day (traffic count year 2005).
- Its listed owner is the county highway agency.
- It is one of 11 of the 128 inventoried bridges in Doniphan County rated poor (8.6%); 11 (8.6%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (39.79194, -95.1025)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 3 | Serious condition |
| Superstructure | 3 | Serious condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 65 ft |
| Location | W. End of Troy |
| NBI structure number | 000221057803284 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Doniphan 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 |
All bridges nearby: Doniphan County, KS bridge conditions · every bridge in Doniphan County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.