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Irr Bia Rte 13 over Cherry Creek

Ziebach County, South Dakota · rated Good in the 2025 National Bridge Inventory

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

Irr Bia Rte 13 over Cherry Creek in Ziebach County, South Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1987 and reconstructed in 2009, making it 38 years old at the 2025 inventory.
It carries about 80 vehicles a day (traffic count year 2023).
It is one of 7 of the 30 inventoried bridges in Ziebach County rated good (23.3%); 3 (10.0%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 220 ft
Location	4 Km SE Red Scaffold
NBI structure number	00000000000A120
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Irr US212 over Ck	1954	1,291	Fair
Irr US212 over Bear Ck	1954	1,130	Fair
Irr US212 over Bear Ck	1955	1,083	Fair
Irr Bia Rte 6 over Ash Creek	1968	814	Good
Irr SD063 over Rudy Ck Tributary	1994	590	Fair
Irr SD063 over Rudey Ck	1993	590	Fair