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Every bridge in Ziebach County, South Dakota

Name: Every bridge in Ziebach County, South Dakota
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

30 inventoried bridges, busiest first

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

Ziebach County, South Dakota, has 30 bridges in the 2025 National Bridge Inventory: 7 rated good, 20 fair, and 3 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

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 Dupree Ck	1961	590	Poor
Irr SD063 over Rudey Ck	1993	590	Fair
Irr SD063 over Rudy Ck Tributary	1994	590	Fair
Irr SD065 over Bear Ck	1984	580	Good
Irr SD065 over Ck	1995	580	Fair
Irr SD065 over Moreau Rv	1972	580	Fair
Irr SD065 over Red Earth Ck	1984	580	Good
Irr SD063 over Cheyenne Rv	1981	405	Fair
Irr Bia Rte 6 over Rattlesnake Creek	1986	293	Fair
Irr Bia Rte 6 over Red Coat Creek	1976	275	Fair
Irr Bia Rte 11 over Cherry Creek	1968	250	Good
Irr Bia Rte 12 over Big Cottonwood Creek	1969	217	Fair
Irr Bia Rte 12 over Little Cottonwood Creek	1969	205	Fair
Irr Bia Rte 6 over Red Scaffold Creek	1960	165	Fair
Thunder Butte Road over Moreau Rv	1969	143	Fair
Thunder Butte Road over Thunder Butte Ck	1969	143	Fair
Irr SD020 over Irish Ck	1975	125	Good
Irr Bia Rte 9 over Abear Creek	1962	93	Fair
Irr Bia Rte 13 over Cherry Creek	1987	80	Good
Iron Lightening Rd over Bear Ck	1954	35	Fair
Leedom Pike Rd over Moreau Rv	1993	20	Fair
Four Corners Road over Ck	1930	16	Poor
Irr County Road over Flint Rock Ck	1945	16	Fair
Four Corner Road over Luis Ck	2005	14	Good
173 St (meade Co) over Beaver Ck	1935	10	Fair
Irr County Road over Bear Ck	1935	10	Poor

Source: FHWA National Bridge Inventory, 2025.

Ziebach County bridge conditions · South Dakota bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.