US75 Hwy over Rock Creek Drainage
Montgomery County, Kansas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US75 Hwy over Rock Creek Drainage in Montgomery 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 1966, making it 59 years old at the 2025 inventory.
- It carries about 4,155 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 105 of the 326 inventoried bridges in Montgomery County rated good (32.2%); 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 2023, on a 24-month routine inspection cycle.
- 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 → (37.21694, -95.765)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 20 ft |
| Location | 0.59 Mi S Wjct US160 |
| NBI structure number | 999907500630061 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
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.