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Nfa D680 over Mcmillan Road / I40

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

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

Nfa D680 over Mcmillan Road / I40 in Knox 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 1975, making it 50 years old at the 2025 inventory.
It carries about 200 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 275 of the 584 inventoried bridges in Knox County rated fair (47.1%); 3 (0.5%) 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 255 ft
Location	E of Strawberry Plns Exit
NBI structure number	47I00400109
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 I40 / Papermill Rd.	2006	182,502	Good
I40 over I40 / Hollywood Dr.	1965	182,502	Good
I40 over I40/i40-eb Rmp to I75 N	1981	182,502	Good
I40 over Third Creek	1965	182,502	Fair
WB Frontage Rd. over I40-wb-rmp / Papermill	2005	182,502	Good
I40 Rmp C-c over I40-wb Rmp-i75n / Pmill	1982	182,502	Good