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HomeSouth DakotaMcCook County › 247TH Street over W. Fork of Vermillion

247TH Street over W. Fork of Vermillion Rv

McCook County, South Dakota · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

View this bridge on a map → (43.8042, -97.44395)

Component ratings

ComponentRating (2025)FHWA scale meaning
Deck7Good condition
Superstructure7Good condition
Substructure7Good condition

Bridge details

StructurePrestressed concrete tee beam
Lengthabout 91 ft
Location0.3E of Unityville
NBI structure number000000044083030
Condition classGood

Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.

Busiest bridges in McCook County

BridgeBuiltVehicles/dayCondition
I090 W over East Fork Vermillion Rv20226,819Good
I090 E over East Fork Vermillion Rv20216,819Good
I090 W over 453 Ave19646,819Good
I090 E over 453 Ave19646,819Good
I090 W over 448 Ave19646,752Good
I090 E over 448 Ave19646,752Good

All bridges nearby: McCook County, SD bridge conditions · every bridge in McCook County · South Dakota bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.