Nfa A409 (sa 4624) over Roan Creek

Johnson County, Tennessee · rated Poor in the 2025 National Bridge Inventory

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

• Nfa A409 (sa 4624) over Roan Creek in Johnson County, Tennessee, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the deck, rated 0 (failed condition, out of service) on the 0-9 scale.
• It was built in 1975, making it 50 years old at the 2025 inventory.
• It carries about 160 vehicles a day (traffic count year 2020).
• Its listed owner is the county highway agency.
• It is one of 5 of the 109 inventoried bridges in Johnson County rated poor (4.6%); 5 (4.6%) are rated poor.
• Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
• Its class is unchanged from 2024 (poor), but component ratings moved: deck 6 to 0, superstructure 5 to 0, substructure 4 to 0.
• Status change: newly closed since 2024.
• Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
• A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

View this bridge on a map → (36.37547, -81.8938)

Component ratings

Bridge details

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

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