Union County Bridge Report Card
Union County scores 93 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Union County, Tennessee
Union County has 61 bridges in the National Bridge Inventory, with 2 rated poor and 0 rated scour-critical. Its poor-condition share of 3.3% is at or below the 4.4% statewide average. Poor-condition bridges carry about 130 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Union County a Bridge Condition Exposure Score of 93/100 (A). The county has 61 bridges in the National Bridge Inventory, including 2 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 130 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 3.3% | 6.6 |
| Poor-condition traffic exposure | 25 | 0.1% of measured traffic | 0.1 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 46 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 88,870 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 3.3% |
| State Poor-Condition Share | 4.4% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 46 years |
| Poor-Condition Traffic Exposure | 130 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Union County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Nfa A128 over Bull Run Creek | Poor condition + traffic exposure | Poor | 80 | 1975 |
| Nfa A152 (sa 8705) over N. Fk Bull Run Creek | Poor condition + traffic exposure | Poor | 50 | 1976 |
| Fap 33 over Bull Run Creek | High traffic | Fair | 14,065 | 1966 |
| Fap 33 over Raccoon Creek | High traffic | Fair | 14,065 | 1966 |
| Fap 33 over Suckstone CR | High traffic | Good | 14,065 | 1967 |
| Fap 33 over Clinch River(norris Lake | High traffic | Good | 7,637 | 2016 |
| Nfa 1090 (sa 8711) over Little Barren Creek | High traffic | Fair | 3,286 | 1960 |
| Fas 144 over N Fork Bull Run Creek | High traffic | Fair | 3,217 | 1952 |
| Fas 144 over Bull Run Creek | High traffic | Good | 3,217 | 1986 |
| Fas 144 over N Fork Bull Run Creek | High traffic | Good | 3,217 | 2011 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.