SD047 over Spring Ck
McPherson County, South Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SD047 over Spring Ck in McPherson 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 1988, making it 37 years old at the 2025 inventory.
- It carries about 78 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 4 of the 14 inventoried bridges in McPherson County rated good (28.6%); 0 (0.0%) 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 → (45.88548, -99.61457)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 20 ft |
| Location | 8.2 N Jct Sd 10 |
| NBI structure number | 000000045050039 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in McPherson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SD010 over Foot Ck | 1957 | 770 | Fair |
| SD010 over Ck | 1957 | 770 | Fair |
| SD010 over North Br Willow Ck | 1957 | 770 | Fair |
| SD010 over Trib to Foot Ck | 2014 | 753 | Fair |
| SD045 over Ck | 1996 | 391 | Fair |
| SD045 over Ck | 1996 | 391 | Fair |
All bridges nearby: McPherson County, SD bridge conditions · every bridge in McPherson County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.