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S. 1ST Avenue over Creek

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

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

S. 1ST Avenue over Creek in Walworth 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 3 (serious condition) on the 0-9 scale.
It was built in 1930, making it 95 years old at the 2025 inventory.
It carries about 183 vehicles a day (traffic count year 2022).
Its listed owner is a town or township highway agency.
It is one of 1 of the 33 inventoried bridges in Walworth County rated poor (3.0%); 1 (3.0%) 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	Steel stringer or multi-beam girder
Length	about 32 ft
Location	SE Corner of Selby
NBI structure number	000000065215065
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
US012 over Burlington Northern RR	1969	2,111	Good
US012 over Ck	1969	2,111	Good
Irr US012 over Missouri Rv (oahe Lk)	1959	2,071	Fair
Irr Ar US012 over Burlington Northern RR	1957	2,071	Fair
US012 over Blue Blanket Ck	1964	1,963	Fair
US012 over Ck	1965	1,544	Fair