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Nfa A512 over I-24

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

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

Nfa A512 over I-24 in Marion County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1963, making it 62 years old at the 2025 inventory.
It carries about 740 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 88 of the 177 inventoried bridges in Marion County rated fair (49.7%); 6 (3.4%) 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 tee beam
Length	about 245 ft
Location	.1 Mi at SR2
NBI structure number	58I00240015
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I24 EB over Running Water Creek	1965	54,610	Good
I24 WB over Running Water Creek	1965	54,610	Good
I24 over Moroney Gulf Branch	1965	54,610	Fair
I24 over Running Water Creek	1965	54,610	Fair
I24 over Running Water Creek	1965	54,610	Good
I24 over Murphy Hollow Creek	1965	54,610	Fair