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County Rd 306 over Big CR

Madison County, Missouri · rated Good in the 2025 National Bridge Inventory

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

County Rd 306 over Big CR in Madison County, Missouri, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2004, making it 21 years old at the 2025 inventory.
It carries about 20 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 39 of the 117 inventoried bridges in Madison County rated good (33.3%); 22 (18.8%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 139 ft
Location	S 29 T 31 N R 7 E
NBI structure number	31672
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US 67 S over Musco CR	1963	10,919	Fair
US 67 S over Lehmeyer CR	1963	10,919	Fair
Mo 72 E over Lit St Francois Rv	2009	10,678	Good
Mo 72 E over Village CR	2009	10,678	Good
US 67 S over Mill CR Br	1999	8,844	Good
Mine La Motte Ave over Saline CR	1931	7,222	Poor