412TH Avenue over Middle Pearl Creek
Beadle County, South Dakota · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 412TH Avenue over Middle Pearl Creek in Beadle County, South Dakota, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 0 (failed condition, out of service) on the 0-9 scale.
- It was built in 1930, making it 95 years old at the 2025 inventory.
- It carries about 56 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 40 of the 150 inventoried bridges in Beadle County rated poor (26.7%); 40 (26.7%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 2017, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (44.29628, -97.97347)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 0 | 0 | Failed condition, out of service |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 28 ft |
| Location | 5.1S & 3E of Cavour |
| NBI structure number | 000000003360231 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | July 2017 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Beadle County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Third Street over James Rv | 1982 | 4,828 | Fair |
| US014 over James Rv | 1960 | 3,601 | Poor |
| US014 over Cain Ck | 1976 | 2,802 | Fair |
| 387TH Avenue over Cain Creek | 1935 | 2,600 | Fair |
| US014 W over Ravine Lk | 1960 | 2,472 | Fair |
| US014 E over Ravine Lk | 1960 | 2,472 | Fair |
All bridges nearby: Beadle County, SD bridge conditions · every bridge in Beadle County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.