US-400 Hwy over Arkansas River Drainage
Ford County, Kansas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-400 Hwy over Arkansas River Drainage in Ford County, Kansas, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1929 and reconstructed in 1998, making it 96 years old at the 2025 inventory.
- It carries about 3,622 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 112 of the 223 inventoried bridges in Ford County rated good (50.2%); 0 (0.0%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (37.70222, -99.85167)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 35 ft |
| Location | 7.61 Mi SE 56/ 400 S Jct |
| NBI structure number | 999940000290331 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Ford County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| 2nd. AVENUE over Arkansas River | 1935 | 14,615 | Fair |
| Wyatt Earp Blvd over Arkansas River Drainage | 1956 | 12,965 | Good |
| US-56/US283 over BNSF R.R. | 1985 | 11,688 | Good |
| Wyatt Earp Blvd over Arkansas River Drainage | 1951 | 11,265 | Good |
| Wyatt Earp Blvd over Arkansas River Drainage | 1985 | 11,265 | Fair |
| S. 14th Ave. over Park St. Drainage Canal | 1957 | 9,585 | Fair |
All bridges nearby: Ford County, KS bridge conditions · every bridge in Ford County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.