US018 over Ck
Turner County, South Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US018 over Ck in Turner County, South Dakota, 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 2018, making it 7 years old at the 2025 inventory.
- It carries about 1,836 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 51 of the 143 inventoried bridges in Turner County rated good (35.7%); 38 (26.6%) are rated poor.
- 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 → (43.2576, -96.98655)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 96 ft |
| Location | 4.8 E Jct Sd 19 |
| NBI structure number | 000000063209170 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Turner County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SD044 over BNSF RR | 1976 | 2,416 | Good |
| SD044 over West Fork Vermillion Rv | 1976 | 2,416 | Fair |
| SD044 over West Fork Vermillion Rv | 1976 | 2,416 | Fair |
| US018 over Vermillion Rv | 2013 | 1,836 | Good |
| SD044 over Ck | 1961 | 1,790 | Good |
| US018 over Hurley Ck | 2019 | 1,775 | Good |
All bridges nearby: Turner County, SD bridge conditions · every bridge in Turner County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.