342 Avenue over Ck

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

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

• 342 Avenue over Ck in Gregory 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 7 (good condition) on the 0-9 scale.
• It was built in 1932, making it 93 years old at the 2025 inventory.
• It carries about 36 vehicles a day (traffic count year 2022).
• Its listed owner is the county highway agency.
• It is one of 15 of the 51 inventoried bridges in Gregory County rated good (29.4%); 5 (9.8%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• It was rated fair in the 2024 inventory and is now good (deck 5 to 7, superstructure 6 to 7, substructure 6 to 7).
• Its most recent inspection on record is dated July 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 → (43.10152, -99.33635)

Component ratings

Bridge details

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

Busiest bridges in Gregory County

All bridges nearby: Gregory County, SD bridge conditions · every bridge in Gregory County · South Dakota bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.