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Mo 146 E over Sugar CR

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

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

Mo 146 E over Sugar CR in Grundy 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 5 (fair condition) on the 0-9 scale.
It was built in 1963, making it 62 years old at the 2025 inventory.
It carries about 896 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 64 of the 185 inventoried bridges in Grundy County rated fair (34.6%); 18 (9.7%) 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 29 T 62 N R 25 W
NBI structure number	999
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Mo 6 E over UP RR	2003	8,128	Good
Mo 6 E over Muddy CR	1990	5,007	Good
Mo 6 E over Thompson Rvr	1962	4,698	Fair
US 65 S over Honey CR Drain Dtc	1973	3,670	Fair
US 65 S over Muddy CR	1971	3,400	Fair
US 65 S over Mo 6	1971	3,209	Fair