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Nfa A284 over Sango Rd-str. 15A / I24

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

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

Nfa A284 over Sango Rd-str. 15A / I24 in Montgomery County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1973, making it 52 years old at the 2025 inventory.
It carries about 140 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 104 of the 186 inventoried bridges in Montgomery County rated fair (55.9%); 9 (4.8%) 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 concrete multiple box beam
Length	about 229 ft
Location	11 M. NE. Southside.
NBI structure number	63I00240023
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I24 over Red River	1972	88,998	Fair
I24 over Red River	1972	88,998	Fair
I24 over I24 Rl / SR 76	1972	88,998	Fair
I24 over I24 Ll / SR 76	1972	88,998	Fair
I24 over Spring Creek	1970	73,806	Good
I24 over Spring Creek	1970	73,806	Good