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Fas 352 over Big Branch

Unicoi County, Tennessee · rated Fair in the 2025 National Bridge Inventory

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

Fas 352 over Big Branch in Unicoi County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
It was built in 1948, making it 77 years old at the 2025 inventory.
It carries about 858 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 65 of the 160 inventoried bridges in Unicoi County rated fair (40.6%); 12 (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

Component	Rating (2025)	FHWA scale meaning
Culvert	5	Fair condition


Structure	Continuous concrete culvert
Length	about 20 ft
Location	2.2 M NE Jct SR81&SR352
NBI structure number	86SR0810009
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I26 Rt Ln over Nfa A305 (tinker Rd)	1985	16,623	Good
I26 Lt Ln over Nfa A305 (tinker Rd)	1985	16,623	Good
I26 over Dry Creek	1985	16,623	Fair
I26 Rt Ln over Nfa A300-pippen Hollow R	1983	16,623	Good
I26 Lt Ln over Nfa A300-pippen Hollow R	1983	16,623	Good
I26 Rt Ln over N Indian CR & Nfa A309	1985	15,924	Good