Kellen Gross Dr over Unnamed Trib to Marne Ck
Yankton County, South Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Kellen Gross Dr over Unnamed Trib to Marne Ck in Yankton County, South Dakota, 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 1993, making it 32 years old at the 2025 inventory.
- It carries about 500 vehicles a day (traffic count year 2022).
- Its listed owner is a city or municipal highway agency.
- It is one of 42 of the 99 inventoried bridges in Yankton County rated good (42.4%); 13 (13.1%) 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 September 2024, on a 48-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 → (42.89448, -97.41202)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 31 ft |
| Location | Kellen Gross Dr - Yankton |
| NBI structure number | 000000068112192 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 48 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 South Dakota department of transportation.
Busiest bridges in Yankton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US081 over Marne Ck | 1959 | 16,870 | Fair |
| SD050 over Marne Ck | 1971 | 9,753 | Fair |
| US081 over Missouri Rv | 2007 | 7,755 | Fair |
| SD052 over Ck | 1988 | 6,711 | Fair |
| W 21ST Street over Marne Creek | 1973 | 6,324 | Good |
| Burleigh Street over Marne Creek | 1989 | 4,996 | Good |
All bridges nearby: Yankton County, SD bridge conditions · every bridge in Yankton County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.