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Nfa 1538 (sa 6620) over Walnut Grove Branch

Obion County, Tennessee · rated Good in the 2025 National Bridge Inventory

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

Nfa 1538 (sa 6620) over Walnut Grove Branch in Obion County, Tennessee, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
It was built in 2006, making it 19 years old at the 2025 inventory.
It carries about 409 vehicles a day (traffic count year 2021).
Its listed owner is the county highway agency.
It is one of 167 of the 381 inventoried bridges in Obion County rated good (43.8%); 11 (2.9%) 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	Prestressed concrete multiple box beam
Length	about 41 ft
Location	2.7 Mi SE Jct SR43&SR215
NBI structure number	66015380009
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Fap 431 over Hoosier Creek	1968	19,597	Fair
Fap 3 over Troy Creek	1960	15,604	Fair
Fap 3 over Troy Creek	1960	15,604	Fair
Fap 3 over Davidson Creek	1960	13,129	Fair
Fap 3 over Davidson Creek	1960	13,129	Fair
SR003 over Branch	2020	13,129	Good