Home › South Dakota › Buffalo County › 355TH Avenue over Crow Creek

355TH Avenue over Crow Creek

Buffalo County, South Dakota · rated Poor in the 2025 National Bridge Inventory

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

355TH Avenue over Crow Creek in Buffalo County, South Dakota, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1975 and reconstructed in 2010, making it 50 years old at the 2025 inventory.
It carries about 55 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 1 of the 25 inventoried bridges in Buffalo County rated poor (4.0%); 1 (4.0%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Prestressed concrete tee beam
Length	about 104 ft
Location	5W & 2.5S of Gann Valley
NBI structure number	000000009240135
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Bia Rte 4 over Campbell Creek	2013	1,720	Good
SD045 over Crow Ck	1960	949	Fair
Irr SD050 over Wolf Ck	1954	928	Fair
Irr SD050 over Crow Ck	1999	928	Good
Irr SD034 over East Fork Soldier Ck	1962	918	Fair
Irr SD047 over Soldier Ck	1963	917	Fair