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Nfa A318 over Muddy Creek

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

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

Nfa A318 over Muddy Creek in McNairy 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 1987, making it 38 years old at the 2025 inventory.
It carries about 30 vehicles a day (traffic count year 2020).
Its listed owner is the county highway agency.
It is one of 121 of the 218 inventoried bridges in McNairy County rated fair (55.5%); 9 (4.1%) 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	Prestressed concrete single box beam
Length	about 104 ft
Location	2 Mi E of SR5
NBI structure number	550A3180001
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Fap 15 over Cypress Creek	1927	12,323	Fair
Fap 5 over Roland Creek	1997	11,398	Fair
Fap 5 over Oxford Creek	1997	11,398	Fair
Fau 5 over Branch	1968	11,398	Good
Fap 5 over Muddy Creek	2001	11,398	Good
Fap 5 over Branch	1990	11,014	Good