Home › South Dakota › Walworth County › All bridges

Every bridge in Walworth County, South Dakota

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

33 inventoried bridges, busiest first

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

Walworth County, South Dakota, has 33 bridges in the 2025 National Bridge Inventory: 11 rated good, 21 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
US012 over Burlington Northern RR	1969	2,111	Good
US012 over Ck	1969	2,111	Good
Irr Ar US012 over Burlington Northern RR	1957	2,071	Fair
Irr US012 over Missouri Rv (oahe Lk)	1959	2,071	Fair
US012 over Blue Blanket Ck	1964	1,963	Fair
US012 over Ck	1965	1,544	Fair
US012 Wf over Ck	1965	1,374	Fair
US012 over Spring Lk	1986	1,145	Good
US083 over Rieger Ck	2005	885	Good
US083 over Swan Ck	2005	767	Fair
SD047 over Ck	2023	394	Good
SD047 over Swan Lake Ck	2023	394	Good
SD130 over Burlington Northern RR	2006	317	Fair
SD1804 over Blue Blanket Ck	1961	272	Fair
S. 1ST Avenue over Creek	1930	183	Poor
304TH Avenue over Creek	1959	180	Fair
139TH Street over Pero Creek	1956	166	Good
132ND Street over Creek	1959	134	Fair
132ND Street over Creek	1959	129	Fair
SD271 over Hiddenwood Ck	1953	124	Fair
303RD Avenue over Reiger Creek	1957	112	Fair
303RD Avenue over Creek	1998	99	Fair
303RD Avenue over Swan Creek	1967	85	Fair
140TH Street over Creek	1969	73	Fair
307TH Avenue over Hiddenwood Creek	1934	52	Fair
307TH Avenue over Hiddenwood Creek	1934	52	Fair
State Park Rd over BNSF RR	1964	50	Fair
310TH Avenue over Swan Creek	1991	41	Good
310TH Avenue over Tributary to Swan Creek	1991	41	Good
304TH Avenue over Creek	1999	33	Good
313TH Avenue over Hiddenwood Creek	1955	33	Fair
127TH Street over Hiddenwood Creek	1954	28	Fair
138TH Street over Swan Lake Creek	1994	15	Good

Source: FHWA National Bridge Inventory, 2025.

Walworth 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.