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Nfa 1430 (sa 4523) over I81

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

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

Nfa 1430 (sa 4523) over I81 in Jefferson County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1960, making it 65 years old at the 2025 inventory.
It carries about 1,066 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 90 of the 123 inventoried bridges in Jefferson County rated fair (73.2%); 15 (12.2%) 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


Structure	Continuous steel stringer or multi-beam girder
Length	about 326 ft
Location	Just N of 140 Jct
NBI structure number	45I00810001
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I40 over Nfa A118 Cook Mill Rd	1973	77,977	Good
I40 over Nfa A118 Cook Mill Rd	1973	77,977	Good
I40 over Exit Ramp over Dumplin C	1973	77,977	Fair
I40 over SR 9	1965	75,859	Good
I40 over SR 9	1965	75,859	Good
I40 over Dumplin Creek	1973	75,859	Fair