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Bridge conditions in Hamblen County, Tennessee

119 inventoried bridges · 3 rated poor · 2025 National Bridge Inventory

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

The federal inventory lists 119 bridges in Hamblen County: 19 rated good, 97 fair, and 3 poor.

3 of the 119 bridges in Hamblen County, Tennessee, are rated in poor condition (2.5%) in the 2025 National Bridge Inventory, as of August 20, 2026.
19 bridges (16.0%) are rated good and 97 (81.5%) fair.
The median Hamblen County bridge was built in 1972.
The busiest poor-rated bridge is I81 over Flat Creek (built 1970), carrying about 45,697 vehicles a day.

Good 16.0% · Fair 81.5% · Poor 2.5% of 119 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
I81 over Flat Creek	1970	45,697	Poor
Fas 340 over Branch	1941	1,770	Poor
Nfa A251 over Spring Branch	1955	1,260	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
I81 730393A over Southern Railway	1967	49,004	Fair
I81 730393A over Southern Railway	1967	49,004	Fair
I81 over Sinking Fork Creek	1964	49,004	Fair
Ramp SR32 to I81SB over SR-32 Ramp/norf So RR	2013	49,004	Good
I81 over Flat Creek	1970	45,697	Poor
I81 over East Fork Flat Creek	1971	45,697	Fair
I81 over Turkey Creek	1972	45,697	Fair
I81 over Nfa A506	1972	45,697	Fair
I81 over Nfa A506	1972	45,697	Fair
I81 over Hales Branch	1972	45,697	Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of Tennessee: Tennessee bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.