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172 Street over Ck

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

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

172 Street over Ck in Codington 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 superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1940 and reconstructed in 1960, making it 85 years old at the 2025 inventory.
It carries about 73 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 14 of the 75 inventoried bridges in Codington County rated poor (18.7%); 14 (18.7%) 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 23 ft
Location	3.6E 1.0N Henry
NBI structure number	000000015046180
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
US212 over Big Sioux Rv	2019	14,592	Good
US212 Ser Rd over Ck	1970	12,968	Fair
US212 over Willow Ck	1970	10,862	Fair
US081 over Big Sioux Rv	1966	7,665	Fair
W Kemp Avenue over Big Sioux River	1935	5,053	Fair
14TH Ave. N Wtn. over Big Sioux Rv	1974	4,970	Poor