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Nfa 5520 (sa 9508) over Nfa 5520 / I40

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

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

Nfa 5520 (sa 9508) over Nfa 5520 / I40 in Wilson 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 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 2,743 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 137 of the 403 inventoried bridges in Wilson County rated fair (34.0%); 31 (7.7%) 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 247 ft
Location	OVERHEAD/I40
NBI structure number	95I00400023
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 Branch	1965	84,731	Good
I40 over Wilson Creek	1965	84,731	Good
I40 over South Fork Creek	1965	84,731	Good
I40 over Stoner Creek	1965	84,056	Good
I40 over Bartons Creek	1965	80,356	Good
I40 over Branch	2002	80,356	Good