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US 61 N over Rt B

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

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

US 61 N over Rt B in Lewis County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1974, making it 51 years old at the 2025 inventory.
It carries about 4,372 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 116 of the 172 inventoried bridges in Lewis County rated fair (67.4%); 10 (5.8%) 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	Continuous steel stringer or multi-beam girder
Length	about 185 ft
Location	S 11 T 60 N R 6 W
NBI structure number	2881
Condition class	Fair

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