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County Rd 306 over Richland CR

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

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

County Rd 306 over Richland CR in Howard County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1970, making it 55 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 67 of the 134 inventoried bridges in Howard County rated fair (50.0%); 10 (7.5%) 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	Steel stringer or multi-beam girder
Length	about 43 ft
Location	S 9 T 50 N R 17 W
NBI structure number	17122
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Mo 240 E over Bonne Femme CR	2011	5,116	Good
Mo 240 E over Bonne Femme CR Ovr	2011	5,116	Good
Mo 5 S over Adams Fk CR	2001	4,694	Good
Mo 5 S over Sulphur CR	1926	4,516	Fair
US 40 E over Moniteau Creek	1941	4,397	Fair
Mo 240 E over Pipes Br	1926	2,701	Fair