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Gum Sulpher Rd over Trib. to Dix River

Rockcastle County, Kentucky · rated Fair in the 2025 National Bridge Inventory

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

Gum Sulpher Rd over Trib. to Dix River in Rockcastle County, Kentucky, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1976, making it 49 years old at the 2025 inventory.
It carries about 76 vehicles a day (traffic count year 2019).
Its listed owner is the county highway agency.
It is one of 62 of the 87 inventoried bridges in Rockcastle County rated fair (71.3%); 8 (9.2%) 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 multiple box beam
Length	about 29 ft
Location	.05 Mi NE of Jct US 150
NBI structure number	102C00025N
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-75 over Lambert Road	1967	47,638	Fair
I-75 over Clay Lick Branch	1967	47,638	Fair
I-75 over Green Hill Road	2018	47,638	Good
I-75 over US-25	2018	47,638	Good
I-75 over US-25	2020	40,386	Good
I-75 over Flat Gap Road	1967	23,819	Fair