US50 Hwy over Cottonwood Riv Drain
Lyon County, Kansas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US50 Hwy over Cottonwood Riv Drain in Lyon County, Kansas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1947 and reconstructed in 1965, making it 78 years old at the 2025 inventory.
- It carries about 12,887 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 172 of the 494 inventoried bridges in Lyon County rated fair (34.8%); 4 (0.8%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (38.41222, -96.24361)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 39 ft |
| Location | 0.44 Mi West of I-35 Jct |
| NBI structure number | 999905000560251 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Lyon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| URB1105 Indust over I-35 Hwy | 1994 | 12,935 | Good |
| I-35HWY over Lincoln St | 1965 | 10,914 | Fair |
| I-35 Hwy over Lincoln St | 2024 | 10,914 | Good |
| I-35 Hwy SB (kta) over Local Road Phenis Creek | 1956 | 9,014 | Good |
| I-35 Hwy NB (kta) over Local Road Phenis Creek | 1956 | 9,014 | Good |
| I-35 Hwy SB (kta) over Local Rd Phenis Creek | 1956 | 9,014 | Good |
All bridges nearby: Lyon County, KS bridge conditions · every bridge in Lyon County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.