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Home › South Dakota › McCook 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 (2024)Rating (2025)FHWA scale meaning
Deck77Good condition
Superstructure77Good condition
Substructure77Good condition

Bridge details

StructurePrestressed concrete tee beam
Lengthabout 91 ft
Location0.3E of Unityville
NBI structure number000000044083030
Condition classGood
Traffic status (item 41)Open, no restriction
Last inspection (item 90)June 2024
Inspection interval (item 91)24 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 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.