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46540 307TH St. over Baptist Ck

Clay County, South Dakota · rated Poor in the 2025 National Bridge Inventory

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

46540 307TH St. over Baptist Ck in Clay County, South Dakota, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 2 (critical condition) on the 0-9 scale.
It was built in 1940, making it 85 years old at the 2025 inventory.
It carries about 97 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 14 of the 93 inventoried bridges in Clay County rated poor (15.1%); 14 (15.1%) are rated poor.
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.

Component ratings


Structure	Timber stringer or multi-beam girder
Length	about 29 ft
Location	10S & 13.4E Irene
NBI structure number	000000014134100
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
SD050 over Sd 50 Wl So Dak Owned R	1981	5,147	Good
SD050 over Vermillion Rv	1981	5,147	Fair
SD046 over Blind Ck	2020	3,303	Good
SD050 E over SD050 L	1977	3,094	Fair
SD019 over Vermillion Rv	1997	2,764	Good
SD019 over BNSF RR	1997	2,764	Good