Total bridges
317
Public highway bridges in Gwinnett County
County profile · official public datasets
Gwinnett County, GA
317 public highway bridges tracked in the FHWA National Bridge Inventory: 89.3% rated Good, 10.7% Fair, 0% Poor.
- 317
- Public bridges
- 89.3%
- Good condition
- 0%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Gwinnett County pairs a top-1% lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 1%
- lowest Poor share in state
- 0%
- Poor-condition share
- 317
- public highway bridges
- 1989
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Gwinnett County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Gwinnett County ranks #2 of 159 Georgia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Gwinnett County, Georgia contains 317 public highway bridges. Roughly 89.3% are rated “Good,” 10.7% “Fair,” and 0% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
89.3%
283 of 317 rated 7-9
Fair condition
10.7%
34 of 317 rated 5-6
Poor condition
0%
0 of 317 rated 4 or below
In-state Poor-share rank
#2 of 159
Among Georgia counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 317 NBI-tracked bridges by lowest applicable component rating.
Good 89.3% (283)
Fair 10.7% (34)
Poor 0% (0)
21.1% of Gwinnett County's bridges have passed the 50-year mark
67 of the 317 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 89.3% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
When Gwinnett County's bridges were built
317 bridges with a recorded construction year, grouped by decade
- 1900s 1
1900–1909
1 bridges
- 1920s 3
1920–1929
3 bridges
- 1930s 4
1930–1939
4 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s 11
1950–1959
11 bridges
- 1960s 31
1960–1969
31 bridges
- 1970s 27
1970–1979
27 bridges
- 1980s
1980–1989
59 bridges
- 1990s
1990–1999
92 bridges
- 2000s 35
2000–2009
35 bridges
- 2010s
2010–2019
46 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 1990s, when 92 of the county's bridges still in the inventory were built, which is 29% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year is 1989, 12 years newer than the Georgia average of 1977.
How Gwinnett County compares with Georgia's closest counties by inventory size
The 5 Georgia counties nearest Gwinnett County in number of bridges, with their condition splits. Its 0% Poor share is the 2nd-lowest of these 6. Its average build year of 1989 against a peer-group mean of 1979 is 10 years newer.
Showing the 5 closest of 158 Georgia counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Cobb County | 414 | 89.1% | 10.9% | 0% | 1987 |
| DeKalb County | 392 | 73.7% | 24.7% | 1.5% | 1971 |
| Gwinnett County (this page) | 317 | 89.3% | 10.7% | 0% | 1989 |
| Chatham County | 265 | 75.8% | 23% | 1.1% | 1985 |
| Bibb County | 220 | 76.4% | 23.6% | 0% | 1974 |
| Bartow County | 219 | 67.1% | 30.6% | 2.3% | 1977 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Gwinnett County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Gwinnett County, both outside Georgia so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside GA (317 bridges here).
- Cherokee County, KS · 317 bridges
- St. Landry County, LA · 317 bridges
- Washington County, MS · 317 bridges
- Van Wert County, OH · 317 bridges
Similar average build year
Nearest mean year-built outside GA (1989 here).
- Harris County, TX · avg 1989 · 4,029 bridges
- Mecklenburg County, NC · avg 1989 · 746 bridges
- Buffalo County, NE · avg 1989 · 459 bridges
- Brazos County, TX · avg 1989 · 370 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (34)
MARTIN FARM ROAD
FairOver: SUWANEE CREEK
IN SUWANEE, Gwinnett, GA
Built 1978 Load: 5.4 t ADT: 1,270
BRANNON ROAD
FairOver: JACKS CREEK
3.25 MI SW OF SNELLVILLE, Gwinnett, GA
Built 1965 Load: 16.3 t ADT: 70
HERRINGTON ROAD
FairOver: SR 316
3.8 MI SE OF DULUTH, Gwinnett, GA
Built 1960 Load: 17.2 t ADT: 8,070
BROOKS ROAD
FairOver: ALCOVY RIVER
3 MI SW OF DACULA, Gwinnett, GA
Built 1977 Load: 17.2 t ADT: 3,790
SR 8 - US 29
FairOver: ALCOVY RIVER
3 MI NE OF LAWRENCEVILLE, Gwinnett, GA
Built 1929 Load: 19.0 t ADT: 9,820
US 29- SR8
FairOver: JACKSON CREEK
IN LILBURN CITY LIMITS, Gwinnett, GA
Built 1973 Load: 19.9 t ADT: 29,500
WOODWARD MILL ROAD
FairOver: SR 419 (I-985 US 23)
3.1 MI S OF BUFORD, Gwinnett, GA
Built 1966 Load: 19.9 t ADT: 2,004
SR 120
FairOver: CSX RAILROAD
IN LAWRENCEVILLE CITY LMT, Gwinnett, GA
Built 1937 Load: 19.9 t ADT: 41,900
I-985 (NBL)
FairOver: IVY CREEK
2.3 MI E OF SUWANEE, Gwinnett, GA
Built 1965 Load: 19.9 t ADT: 10,800
SUWANEE CRK ROAD
FairOver: BENNETT CREEK
1.8 MI S OF SUWANEE, Gwinnett, GA
Built 1958 Load: 19.9 t ADT: 1,910
BUFORD HIGHWAY-US2
FairOver: SUWANEE CREEK
0.5 MI S OF SUWANEE, Gwinnett, GA
Built 1973 Load: 20.8 t ADT: 15,900
JIMMY CARTER BLVD
FairOver: I-85
2 MI S OF NORCROSS, Gwinnett, GA
Built 1973 Load: 20.8 t ADT: 33,440
SR 317
FairOver: SUWANEE CREEK
IN SUWANEE, Gwinnett, GA
Built 1959 Load: 22.6 t ADT: 29,600
LAKEVIEW ROAD
FairOver: BIG HAYNES CREEK
1.8 MI SW OF GRAYSON, Gwinnett, GA
Built 1964 Load: 22.6 t ADT: 2,004
SR 316 WBL
FairOver: YELLOW RIVER
2.5 MI W OF LAWRENCEVILLE, Gwinnett, GA
Built 1960 Load: 24.4 t ADT: 34,800
DROWNING CREEK RD.
FairOver: DROWNING CREEK
3.3 MI SE OF DACULA, Gwinnett, GA
Built 1964 Load: 24.4 t ADT: 1,230
MARTIN NASH ROAD
FairOver: TURKEY CREEK
2.7 MI NW OF SNELLVILLE, Gwinnett, GA
Built 1974 Load: 24.4 t ADT: 2,004
E JONES BRIDGE RD
FairOver: CHATTAHOOCHEE RIVER TRIB
2.4 MI W OF BERKELY LAKE, Gwinnett, GA
Built 1957 Load: 24.4 t ADT: 2,004
BRISTOL DRIVE
FairOver: SWEETWATER CREEK (LAKE)
1.5 MI SE OF DULUTH, Gwinnett, GA
Built 1960 Load: 24.4 t ADT: 2,004
SR 316 EBL
FairOver: YELLOW RIVER
2.5 MI W OF LAWRENCEVILLE, Gwinnett, GA
Built 1960 Load: 28.1 t ADT: 92,800
SR 120
FairOver: YELLOW RIVER
1.2 MI W OF LAWRENCEVILLE, Gwinnett, GA
Built 1902 Load: 29.0 t ADT: 19,308
KILLIAN HILL ROAD
FairOver: CSX RAILROAD
IN LILBURN, Gwinnett, GA
Built 1975 Load: 32.6 t ADT: 18,700
COLLINS HILL ROAD
FairOver: YELLOW RIVER
2 MI NW OF LAWRENCEVILLE, Gwinnett, GA
Built 1986 Load: 32.6 t ADT: 10,600
FENCE ROAD
FairOver: APALACHEE RIVER
2 MI N OF DACULA, Gwinnett, GA
Built 1991 Load: 32.6 t ADT: 10,600
TRIBBLE MILL PKWY
FairOver: TRIBBLE MILL LAKE
3 MI NE OF GRAYSON, Gwinnett, GA
Built 1994 Load: 32.6 t ADT: 1,930
SATELLITE BLVD.
FairOver: SWEETWATER CREEK
2.3 MI SE OF DULUTH, Gwinnett, GA
Built 1983 Load: 32.6 t ADT: 24,100
MOORE ROAD
FairOver: LEVEL CREEK TRIB
2 MI NW OF SUWANEE, Gwinnett, GA
Built 1988 Load: 32.6 t ADT: 2,004
STEVE REYNOLDS BVD
FairOver: BROMOLOW CREEK
3.5 MI N OF LILBURN, Gwinnett, GA
Built 1988 Load: 32.6 t ADT: 22,100
JONESMILL SPUR
FairOver: CROOKED CREEK TRIB
2.5 MI W OF NORCROSS, Gwinnett, GA
Built 1980 Load: 32.6 t ADT: 4,160
WESTBROOK ROAD
FairOver: IVY CREEK
1.7 MI E OF SUWANEE, Gwinnett, GA
Built 1997 Load: 32.6 t ADT: 4,460
PEACHTREE IND SBL
FairOver: CROOKED CREEK TRIB
2 MI W OF NORCROSS, Gwinnett, GA
Built 1980 Load: 37.1 t ADT: 45,400
US 29 / SR 8
FairOver: REDLAND CREEK
2.7 MI SW OF LAWRENCEVILL, Gwinnett, GA
Built 1942 Load: 99.9 t ADT: 24,300
JIMMY CART (SR140)
FairOver: CROOKED CREEK TRIB
1.3 MI NW OF NORCROSS, Gwinnett, GA
Built 1980 Load: 99.9 t ADT: 31,300
SUGAR RIDGE DRIVE
FairOver: LEVEL CREEK TRIB
5 MI W OF SUGAR HILL, Gwinnett, GA
Built 1980 Load: 99.9 t ADT: 610
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.