Gwinnett County Bridge Report Card
Gwinnett County scores 100 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Gwinnett County, Georgia
Gwinnett County has 320 bridges in the National Bridge Inventory, with 0 rated poor and 0 rated scour-critical. Its poor-condition share of 0.0% is at or below the 1.7% statewide average.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Gwinnett County a Bridge Condition Exposure Score of 100/100 (A). The county has 320 bridges in the National Bridge Inventory, including 0 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 0 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 | 0.0% | 0.0 |
| Poor-condition traffic exposure | 25 | 0.0% of measured traffic | 0.0 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 36 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 8,019,092 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 | 0.0% |
| State Poor-Condition Share | 1.7% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 36 years |
| Poor-Condition Traffic Exposure | 0 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Gwinnett County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| I-85 over Bromolow Creek | High traffic | Good | 307,000 | 1958 |
| I-85 over Beaver Ruin Creek | High traffic | Good | 303,000 | 1959 |
| I-85 Sbl over Sweetwater Creek | High traffic | Good | 255,000 | 1958 |
| I-85 NB SB And Cd over Sugarloaf Parkway | High traffic | Good | 172,000 | 1999 |
| I-85 NB & SB Nbcd over Fork Creek | High traffic | Good | 170,000 | 1990 |
| I-85 Southbound over SR 419 NB (i-985) | High traffic | Good | 162,000 | 2018 |
| I-85 Nbl over Sweetwater Creek | High traffic | Good | 131,000 | 1958 |
| I-85 over Little Ivy Creek | High traffic | Good | 131,000 | 1962 |
| I-85 (sbl) over Sr20 - Lawrenceville HWY | High traffic | Good | 131,000 | 1999 |
| SR 316 & 316 EB Ra over Fork Creek | High traffic | Good | 109,000 | 1960 |
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.