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County Rd 429 over Wyaconda Rvr

Lewis County, Missouri · rated Poor in the 2025 National Bridge Inventory

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

County Rd 429 over Wyaconda Rvr in Lewis County, Missouri, 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 1910, making it 115 years old at the 2025 inventory.
It carries about 50 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 10 of the 172 inventoried bridges in Lewis County rated poor (5.8%); 10 (5.8%) 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

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

Bridge	Built	Vehicles/day	Condition
US 61 S over Big Br CR	1999	14,279	Fair
US 61 S over Bland Br Ck	2005	14,279	Fair
US 61 S over Unnamed CR	2005	14,279	Fair
US 61 S over Unnamed CR	2005	14,279	Fair
US 61 S over Artesian Br CR	2005	7,886	Fair
US 61 N over Waconda Rvr	2001	7,505	Good