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Fap 46 over SR 46 / I40

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

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

Fap 46 over SR 46 / I40 in Dickson 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 1994, making it 31 years old at the 2025 inventory.
It carries about 13,161 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 89 of the 242 inventoried bridges in Dickson County rated fair (36.8%); 12 (5.0%) 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 prestressed concrete single box beam
Length	about 293 ft
Location	4.2 Mi.s.e. of Dickson
NBI structure number	22I00400009
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 Rl /SR 840-rmp-nw&se	2000	50,777	Fair
I40 over I40 Ll /SR 840-rmp-nw&se	2000	50,777	Fair
I40 over Piney River & Nfa A361	1963	34,978	Fair
I40 over Piney River & Nfa A361	1963	34,978	Fair
I40 over I40-rl / East Piney Rd.	1963	34,978	Poor
I40 over I40-ll / East Piney Rd.	1963	34,978	Poor