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Cowan Ridge Rd over Big Sugar CR

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

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

Cowan Ridge Rd over Big Sugar CR in McDonald 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 7 (good condition) on the 0-9 scale.
It was built in 2013, making it 12 years old at the 2025 inventory.
It carries about 15 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 34 of the 145 inventoried bridges in McDonald County rated good (23.4%); 18 (12.4%) 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 prestressed concrete stringer or multi-beam girder
Length	about 274 ft
Location	S 21 T 22 N R 30 W
NBI structure number	33998
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Is 49 S over Wht Oak Hollow CR	2021	15,111	Good
Is 49 S over Rattlesnake Holw C	2021	15,111	Fair
Is 49 S over Goodin Hollow Trib	2021	15,024	Good
US 71 S over Miser Hollow Br	1966	12,353	Fair
US 71 N over Lit Sugar CR	2003	11,508	Fair
US 71 S over Lit Sugar CR	2003	11,222	Fair