Rd P (n.0-25.7) over Cottonwood River
Lyon County, Kansas · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rd P (n.0-25.7) over Cottonwood River in Lyon County, Kansas, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1910, making it 115 years old at the 2025 inventory.
- It carries about 30 vehicles a day (traffic count year 2007).
- Its listed owner is the county highway agency.
- It is one of 4 of the 494 inventoried bridges in Lyon County rated poor (0.8%); 4 (0.8%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated March 2024, on a 12-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (38.36581, -96.11489)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 3 | 3 | Serious condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel through truss |
| Length | about 216 ft |
| Location | 7.0W 0.5S Neosho Rapids |
| NBI structure number | 000560951005247 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | March 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
| Fracture critical (item 92A) | Yes |
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 |
| US50 Hwy over Cottonwood Riv Drain | 1947 | 12,887 | Fair |
| 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 |
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.