Total bridges
104
Public highway bridges in Grady County
County profile · official public datasets
Grady County, GA
104 public highway bridges tracked in the FHWA National Bridge Inventory: 93.3% rated Good, 5.8% Fair, 1% Poor.
- 104
- Public bridges
- 93.3%
- Good condition
- 1%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Grady County pairs a better-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 50%
- lowest Poor share in state
- 1%
- Poor-condition share
- 104
- public highway bridges
- 1982
- 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.
Grady County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Grady County ranks #79 of 159 Georgia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1%). Grady County, Georgia contains 104 public highway bridges. Roughly 93.3% are rated “Good,” 5.8% “Fair,” and 1% “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
93.3%
97 of 104 rated 7-9
Fair condition
5.8%
6 of 104 rated 5-6
Poor condition
1%
1 of 104 rated 4 or below
In-state Poor-share rank
#79 of 159
Among Georgia counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 104 NBI-tracked bridges by lowest applicable component rating.
Good 93.3% (97)
Fair 5.8% (6)
Poor 1% (1)
Grady County's Poor-condition bridges carry 20 vehicle crossings a day
That is 0% of the county's reported daily bridge traffic on 1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 20 crossings a day against 2,586 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 104 of 104 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
33.7% of Grady County's bridges have passed the 50-year mark
35 of the 104 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 93.3% 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.
One structure carries 100% of the county's Poor-condition bridge traffic
CRANFORD ROAD over TIRED CREEK, built 1992, carries 20 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 1-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 20 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Grady County's bridges were built
104 bridges with a recorded construction year, grouped by decade
- 1930s 4
1930–1939
4 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s 9
1950–1959
9 bridges
- 1960s
1960–1969
17 bridges
- 1970s
1970–1979
10 bridges
- 1980s
1980–1989
19 bridges
- 1990s
1990–1999
24 bridges
- 2000s
2000–2009
10 bridges
- 2010s 8
2010–2019
8 bridges
- 2020s 2
2020–2029
2 bridges
What this shows Construction peaked in the 1990s, when 24 of the county's bridges still in the inventory were built, which is 23.1% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year is 1982, 5 years newer than the Georgia average of 1977.
How Grady County compares with Georgia's closest counties by inventory size
The 5 Georgia counties nearest Grady County in number of bridges, with their condition splits. Its 1% Poor share is the 4th-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1975 is 7 years newer.
Showing the 5 closest of 158 Georgia counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Fannin County | 107 | 36.4% | 61.7% | 1.9% | 1980 |
| Habersham County | 107 | 77.6% | 21.5% | 0.9% | 1974 |
| Brooks County | 104 | 68.3% | 27.9% | 3.8% | 1970 |
| Grady County (this page) | 104 | 93.3% | 5.8% | 1% | 1982 |
| Morgan County | 103 | 84.5% | 15.5% | 0% | 1981 |
| Clarke County | 102 | 78.4% | 21.6% | 0% | 1972 |
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 Grady 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 Grady County, both outside Georgia so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside GA (104 bridges here).
- Nassau County, FL · 104 bridges
- Bonner County, ID · 104 bridges
- Martin County, IN · 104 bridges
- Livingston County, KY · 104 bridges
Similar average build year
Nearest mean year-built outside GA (1982 here).
- Oklahoma County, OK · avg 1982 · 1,216 bridges
- Jackson County, MO · avg 1982 · 930 bridges
- Milwaukee County, WI · avg 1982 · 893 bridges
- Champaign County, IL · avg 1982 · 727 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (104)
SR 111
GoodOver: SHAW CREEK
APP 1.5 MILES NORTH OF J, Grady, GA
Built 1938 Load: 69.8 t ADT: 2,840
UNION HILL ROAD
GoodOver: SPENCE MILL CREEK
11 MILES NORTH EAST OF C, Grady, GA
Built 1988 Load: 86.1 t ADT: 121
UNION HILL ROAD
GoodOver: E BRANCH BARNETTS CREEK
13.1 MILES NORTH EAST O, Grady, GA
Built 1989 Load: 98.8 t ADT: 10
CRANFORD ROAD
PoorOver: TIRED CREEK
APP 4.3 MI SW OF CAIRO, Grady, GA
Built 1992 Load: 24.4 t ADT: 20
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.