US166 Hwy EB over UP Railroad
Montgomery County, Kansas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US166 Hwy EB over UP Railroad in Montgomery County, Kansas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 2,627 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 203 of the 326 inventoried bridges in Montgomery County rated fair (62.3%); 18 (5.5%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (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 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 → (37.03611, -95.67472)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel girder and floorbeam |
| Length | about 449 ft |
| Location | 14.21 Mi E Sjct US75 EB |
| NBI structure number | 999916600630411 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | N: not over a waterway |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Montgomery County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US166 US169 Hwy over Verdigris River | 1948 | 10,188 | Good |
| US75 US160 Hwy over UP RR 20TH ST & Drg. | 1940 | 8,501 | Good |
| US169 Hwy over Onion Creek Overflow | 1988 | 6,903 | Good |
| US169 Hwy over Onion Creek | 1988 | 6,903 | Good |
| Eighth Street; 001 over Sycamore Creek | 1984 | 5,950 | Fair |
| US160 K96 Hwy over Mouse Creek | 1960 | 5,920 | Fair |
All bridges nearby: Montgomery County, KS bridge conditions · every bridge in Montgomery County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.