K18 Hwy over Kansas River Drainage
Wabaunsee County, Kansas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- K18 Hwy over Kansas River Drainage in Wabaunsee County, Kansas, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1964 and reconstructed in 2006, making it 61 years old at the 2025 inventory.
- It carries about 898 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 89 of the 242 inventoried bridges in Wabaunsee County rated good (36.8%); 25 (10.3%) 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 May 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 → (39.15778, -96.37667)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 170 ft |
| Location | 0.77 Mi E Riley Coln |
| NBI structure number | 999901800990481 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Wabaunsee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-70 Highway EB over Dry Creek | 2003 | 11,271 | Good |
| I-70 Highway WB over Keene Road | 2003 | 11,271 | Good |
| I-70 Highway EB over Keene Road | 2003 | 11,271 | Good |
| I-70 Highway WB over Hudson Ranch Road | 2003 | 11,271 | Good |
| I-70 Highway EB over Hudson Ranch Road | 2003 | 11,271 | Good |
| I-70 Highway WB over Dry Creek | 2003 | 11,220 | Fair |
All bridges nearby: Wabaunsee County, KS bridge conditions · every bridge in Wabaunsee County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.