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Every bridge in Sanborn County, South Dakota

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

54 inventoried bridges, busiest first

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

Sanborn County, South Dakota, has 54 bridges in the 2025 National Bridge Inventory: 18 rated good, 29 fair, and 7 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
SD034 over Drainage Ditch	1936	1,738	Fair
SD034 E over James Rv	2004	1,484	Fair
SD034 W over James Rv	2003	1,484	Fair
SD037 N over Sand Ck	1976	1,354	Good
SD037 S over Sand Ck	1977	1,354	Good
SD037 N over James Rv	1992	1,271	Good
SD037 S over James Rv	2002	1,271	Good
SD224 over Dry Run Ck	1962	1,118	Fair
241ST Street over Morris Ck	1930	253	Fair
397TH Ave. over Morris Ck	1930	225	Poor
405TH Ave. over James Rv	1969	192	Fair
236TH Street over Morris Ck	1963	183	Fair
221ST Street over James Rv	1957	176	Fair
413 Ave over Fork of Redstone Ck	2005	175	Fair
413TH Ave. over Redstone Ck	1930	175	Fair
413TH Ave over Redstone Creek	2022	147	Good
408TH Ave. over Redstone Ck	1965	120	Fair
414TH Ave. over Jim Ck	1930	120	Poor
408TH Ave over Ck	1964	105	Fair
230TH Street over James Rv	1992	75	Fair
230TH Street over Redstone Ck	1992	75	Good
230TH Street over Redstone Ck	1992	75	Good
County Rd over Sand Ck	1940	70	Poor
220 St. over Ck	1920	56	Poor
223RD Street over Sand Ck	2010	56	Fair
224TH Street over Sand Ck	2001	56	Good
225TH St. over Ck	1905	56	Fair
226TH St. over Ck	2020	56	Good
228TH Street over Sand Ck	1969	56	Fair
229TH Street over Overflow Sand Ck	2014	56	Good
229TH Street over Sand Ck	2000	56	Fair
394TH Ave. over Sand Ck	1970	56	Fair
395TH Avenue over Sand Ck	2011	56	Good
399TH Ave. over Sand Ck	1982	56	Fair
403RD Ave. over Sand Ck	2008	56	Good
407TH Ave. over James Rv	1983	56	Fair
410 Ave over Ck	2003	56	Fair
414TH Ave over West Redstone Ck	1920	56	Fair
414TH Ave over West Redstone Ck	1977	56	Fair
415TH Ave. over Ck	2020	56	Good
415TH Ave. over Jim Ck	1930	56	Fair
416TH Ave. over Ck	1920	56	Poor
416TH Ave. over West Redstone Ck	1963	56	Fair
River Rd. over Sand Ck	1963	56	Fair
Ruml Rd over James Rv	1976	56	Fair
415TH Ave over Ck	1977	50	Good
243 St over James Rv	1985	45	Good
397TH Ave. over Sand Ck	1920	35	Poor
411TH Ave. over Redstone Ck	1998	35	Good
227TH St. over Ck	1982	25	Fair
230TH St. over Redstone Ck	1967	20	Fair
241 St over James Rv	1973	16	Poor
227TH St. over West Redstone Ck	2017	11	Good
226TH Street over Sand Creek	2002	5	Good

Source: FHWA National Bridge Inventory, 2025.

Sanborn 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.