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Bridge conditions in Union County, Tennessee

61 inventoried bridges · 2 rated poor · 2025 National Bridge Inventory

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

2 of the 61 bridges the federal inventory lists in Union County are rated poor; the rest split 25 good and 34 fair.

2 of the 61 bridges in Union County, Tennessee, are rated in poor condition (3.3%) in the 2025 National Bridge Inventory, as of August 20, 2026.
25 bridges (41.0%) are rated good and 34 (55.7%) fair.
The median Union County bridge was built in 1980.
The busiest poor-rated bridge is Nfa A128 over Bull Run Creek (built 1975), carrying about 80 vehicles a day.

Good 41.0% · Fair 55.7% · Poor 3.3% of 61 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
Nfa A128 over Bull Run Creek	1975	80	Poor
Nfa A152 (sa 8705) over N. Fk Bull Run Creek	1976	50	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Fap 33 over Suckstone CR	1967	14,065	Good
Fap 33 over Bull Run Creek	1966	14,065	Fair
Fap 33 over Raccoon Creek	1966	14,065	Fair
Fap 33 over Clinch River(norris Lake	2016	7,637	Good
Nfa 1090 (sa 8711) over Little Barren Creek	1960	3,286	Fair
Fas 144 over Bull Run Creek	1986	3,217	Good
Fas 144 over N Fork Bull Run Creek	1952	3,217	Fair
Fas 144 over N Fork Bull Run Creek	2011	3,217	Good
Fas 61 over Bull Run Creek	1985	2,895	Fair
Fas 61 over Flat Creek	1970	2,849	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.