US385 over Whitewood Ck
Lawrence County, South Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US385 over Whitewood Ck in Lawrence 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 1985, making it 40 years old at the 2025 inventory.
- It carries about 2,338 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 53 of the 136 inventoried bridges in Lawrence County rated good (39.0%); 16 (11.8%) 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 → (44.35315, -103.73862)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete slab |
| Length | about 54 ft |
| Location | 0.5 S of Pluma |
| NBI structure number | 000000041156176 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Lawrence County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Jackson Blvd over Spearfish Ck | 1966 | 12,135 | Fair |
| US014A Pine St over Whitewood Ck | 1967 | 11,370 | Fair |
| US014A over I090 | 2016 | 10,868 | Good |
| I090 W over Sandstone Dr | 1970 | 10,406 | Fair |
| I090 E over Sandstone Dr | 1970 | 10,406 | Good |
| US014A over Ck | 1994 | 9,638 | Good |
All bridges nearby: Lawrence County, SD bridge conditions · every bridge in Lawrence County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.