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Hartsburg Bottomrd over Hart CR

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

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

Hartsburg Bottomrd over Hart CR in Boone County, Missouri, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 8 (very good condition) on the 0-9 scale.
It was built in 2021, making it 4 years old at the 2025 inventory.
It carries about 113 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 167 of the 335 inventoried bridges in Boone County rated good (49.9%); 12 (3.6%) 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	Steel stringer or multi-beam girder
Length	about 123 ft
Location	S 18 T 45 N R 12 W
NBI structure number	36582
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Is 70 E over Lp 70	2015	63,178	Good
Is 70 E over Hominy CR	1983	53,537	Good
Is 70 E over Grindstone CR	1949	47,500	Fair
Is 70 E over Sugar Br	1958	40,417	Fair
US 63 S over Mo 740	1976	38,962	Fair
US 63 S over Hominy CR	2005	38,962	Good