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448 Ave over East Fork Vermillion Rv

Lake County, South Dakota · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

448 Ave over East Fork Vermillion Rv in Lake County, South Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1997, making it 28 years old at the 2025 inventory.
It carries about 42 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 40 of the 79 inventoried bridges in Lake County rated fair (50.6%); 4 (5.1%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete tee beam
Length	about 44 ft
Location	3W & 1.8S Orland
NBI structure number	000000040060228
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
SD034 over Silver Ck	2000	8,695	Fair
414 NE Second Str over Madison Ck	1959	7,576	Fair
SD034 W over Park Ck	1977	3,631	Fair
SD034 E over Park Ck	1977	3,631	Fair
500 N Egan Ave over Madison Ck	1993	3,190	Fair
610 S. Egan Avenue over Silver Ck	1979	2,915	Fair