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SD034 W over James Rv

Sanborn County, South Dakota · rated Fair in the 2025 National Bridge Inventory

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

SD034 W over James Rv in Sanborn County, South Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 2003, making it 22 years old at the 2025 inventory.
It carries about 1,484 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 29 of the 54 inventoried bridges in Sanborn County rated fair (53.7%); 7 (13.0%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 332 ft
Location	0.9 SE of Forestburg
NBI structure number	000000056118127
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
SD034 over Drainage Ditch	1936	1,738	Fair
SD034 E over James Rv	2004	1,484	Fair
SD037 S over Sand Ck	1977	1,354	Good
SD037 N over Sand Ck	1976	1,354	Good
SD037 S over James Rv	2002	1,271	Good
SD037 N over James Rv	1992	1,271	Good