Willow St.-presho over Medicine Creek

Lyman County, South Dakota · rated Good in the 2025 National Bridge Inventory

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

• Willow St.-presho over Medicine Creek in Lyman County, South Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the deck, rated 9 (excellent condition) on the 0-9 scale.
• It was built in 2024, making it 1 years old at the 2025 inventory.
• It carries about 60 vehicles a day (traffic count year 2022).
• Its listed owner is the county highway agency.
• It is one of 46 of the 114 inventoried bridges in Lyman County rated good (40.4%); 12 (10.5%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• It was rated poor in the 2024 inventory and is now good (deck 5 to 9, superstructure 5 to 9, substructure 4 to 9).
• Status change: its 2024 load posting has been removed.
• Its most recent inspection on record is dated December 2024, on a 24-month routine inspection cycle.
• A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

View this bridge on a map → (43.90703, -100.04454)

Component ratings

Bridge details

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

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