US018 over Trib Little White Rv
Bennett County, South Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US018 over Trib Little White Rv in Bennett County, South Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2020, making it 5 years old at the 2025 inventory.
- It carries about 573 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 2 of the 15 inventoried bridges in Bennett County rated good (13.3%); 3 (20.0%) 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 November 2022, 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 → (43.21339, -101.23727)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 20 ft |
| Location | 0.5W Todd Co Border US18 |
| NBI structure number | 000000004435122 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2022 |
| 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 Bennett County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US018 over Ck | 1951 | 906 | Fair |
| SD073 over Little White Rv | 1964 | 522 | Fair |
| SD073 over Lake Ck | 1964 | 522 | Fair |
| Irr Bia Rte Allen over Trib of White River | 2017 | 300 | Good |
| 290 Street over Ck | 1954 | 123 | Fair |
| 231 Avenue over Ck | 1954 | 123 | Fair |
All bridges nearby: Bennett County, SD bridge conditions · every bridge in Bennett County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.