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Nfa 1798 (sa 4315) over Tumbling Creek

Humphreys County, Tennessee · rated Good in the 2025 National Bridge Inventory

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

Nfa 1798 (sa 4315) over Tumbling Creek in Humphreys County, Tennessee, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1965, making it 60 years old at the 2025 inventory.
It carries about 278 vehicles a day (traffic count year 2021).
Its listed owner is the county highway agency.
It is one of 74 of the 252 inventoried bridges in Humphreys County rated good (29.4%); 9 (3.6%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous prestressed concrete stringer or multi-beam girder
Length	about 110 ft
Location	3 Mi. NE. SR 230.
NBI structure number	43017980005
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I40 over Branch	1965	35,730	Fair
I40 over Branch	1965	35,730	Fair
I40 over South Fork Blue Creek	1965	35,649	Fair
I40 over South Fork Blue Creek	1965	35,649	Fair
I40 over Branch	1964	35,368	Fair
I40 over Branch	1964	35,368	Fair