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Nfa A512 over I81

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

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

Nfa A512 over I81 in Hamblen County, Tennessee, 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 1967, making it 58 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 19 of the 119 inventoried bridges in Hamblen County rated good (16.0%); 3 (2.5%) 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

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

Bridge	Built	Vehicles/day	Condition
I81 730393A over Southern Railway	1967	49,004	Fair
I81 730393A over Southern Railway	1967	49,004	Fair
I81 over Sinking Fork Creek	1964	49,004	Fair
Ramp SR32 to I81SB over SR-32 Ramp/norf So RR	2013	49,004	Good
I81 over Flat Creek	1970	45,697	Poor
I81 over East Fork Flat Creek	1971	45,697	Fair