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NW 50TH St over Thompson Rvr

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

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

NW 50TH St over Thompson Rvr 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 substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1991, making it 34 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 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 prestressed concrete stringer or multi-beam girder
Length	about 323 ft
Location	S 22 T 62 N R 25 W
NBI structure number	17741
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