Home › South Dakota › Harding County › All bridges

Every bridge in Harding County, South Dakota

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

49 inventoried bridges, busiest first

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

Harding County, South Dakota, has 49 bridges in the 2025 National Bridge Inventory: 25 rated good, 23 fair, and 1 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
US085 over South Fork Grand Rv	1963	1,484	Fair
US085 over Buffalo Ck	1964	1,330	Fair
US085 over Bull Ck	1960	1,248	Fair
US085 over Jones Ck	1960	1,248	Fair
US085 over Sheep Ck	1963	1,248	Fair
US085 over North Br Moreau Rv	1974	1,190	Fair
US085 over Sand Ck	1974	1,190	Fair
US085 over Big Nasty Ck	1960	1,075	Fair
US085 over Crooked Ck	1973	1,075	Fair
SD079 over Big Nasty Ck	1962	364	Fair
SD079 over Ck	1962	364	Good
SD079 over Ck	1962	364	Good
SD079 over North Fork Grand Rv	1966	364	Fair
SD079 over South Fork Grand Rv	1957	364	Fair
SD079 over Moreau Rv	1964	356	Fair
SD020 over Rush Ck	1975	342	Fair
SD020 over Clarks Fork Ck	1995	191	Good
SD020 over Gap Ck	1959	191	Fair
SD020 over Sioux Ck	2021	191	Good
SD020 over Squaw Ck	1994	191	Good
Camp Crook Road over Ck	1985	180	Fair
Cox Road over Crooked Ck	2016	139	Fair
Cave Hill Rd over Bull Ck	1977	131	Fair
SD020 over Brush Ck	1975	112	Fair
SD020 over Little Missouri Rv	2021	112	Good
SD020 over Valley Ck	2021	112	Good
Camp Crook Rd over Ck	1960	97	Fair
Ludlow Rd over Coal Bank Ck	1987	91	Good
Ludlow Rd over Lems Ck	1987	91	Good
Cox Rd over Crooked Ck	2016	87	Good
Harding Rd over Valley Ck	2004	75	Good
Lewton Rd over Slick Ck	2012	70	Good
N. Camp Crook Rd over Slick Ck	2015	64	Good
Old Hwy 85 over Boxelder Ck	2021	60	Good
Old Hwy 85 over Sheep Ck	1936	60	Poor
Camp Crook Rd over South Fork Moreau Rv	1999	50	Good
Ladner Road over Dry House Ck	2003	45	Good
Park Rd over West Squaw Ck	2008	45	Good
River Road over Little Missouri Rv	2006	45	Good
Camp Crook Rd over North Fork Stick Ck	2001	44	Good
Camp Crook Rd over Shaw Ck	1961	36	Good
Harding Cut-off over Katy Ck	1961	36	Fair
Marty Rd over North Fork Moreau Rv	1986	31	Fair
Redig Rd over Ck	2018	28	Good
Fas 6313 over Boxelder Ck	2013	25	Good
Gilbert Hett Rd over Trib. to Grand River	2008	25	Good
Wagner Rd over Big Nasty Ck	2017	23	Good
Harding Rd over South Fork Moreau Rv	1961	22	Fair
Sorum Rd over Point Ck	2006	9	Good

Source: FHWA National Bridge Inventory, 2025.

Harding 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.