Total bridges
179
Public highway bridges in Thomas County
County profile · official public datasets
Thomas County, GA
179 public highway bridges tracked in the FHWA National Bridge Inventory: 90.5% rated Good, 9.5% Fair, 0% Poor.
- 179
- Public bridges
- 90.5%
- Good condition
- 0%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Thomas County posts a top-5% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 3%
- lowest Poor share in state
- 0%
- Poor-condition share
- 179
- public highway bridges
- 1978
- 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.
Thomas County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Thomas County ranks #5 of 159 Georgia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Thomas County, Georgia contains 179 public highway bridges. Roughly 90.5% are rated “Good,” 9.5% “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
90.5%
162 of 179 rated 7-9
Fair condition
9.5%
17 of 179 rated 5-6
Poor condition
0%
0 of 179 rated 4 or below
In-state Poor-share rank
#5 of 159
Among Georgia counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 179 NBI-tracked bridges by lowest applicable component rating.
Good 90.5% (162)
Fair 9.5% (17)
Poor 0% (0)
39.1% of Thomas County's bridges have passed the 50-year mark
70 of the 179 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 90.5% 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 Thomas County's bridges were built
179 bridges with a recorded construction year, grouped by decade
- 1920s 1
1920–1929
1 bridges
- 1930s 10
1930–1939
10 bridges
- 1940s 8
1940–1949
8 bridges
- 1950s
1950–1959
19 bridges
- 1960s
1960–1969
21 bridges
- 1970s
1970–1979
25 bridges
- 1980s
1980–1989
35 bridges
- 1990s
1990–1999
23 bridges
- 2000s
2000–2009
32 bridges
- 2010s 5
2010–2019
5 bridges
What this shows Construction peaked in the 1980s, when 35 of the county's bridges still in the inventory were built, which is 19.6% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1978) matches the Georgia average (1977).
How Thomas County compares with Georgia's closest counties by inventory size
The 5 Georgia counties nearest Thomas County in number of bridges, with their condition splits. Its 0% Poor share is the 1st-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1981 is in line with the group.
Showing the 5 closest of 158 Georgia counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Richmond County | 183 | 89.6% | 8.7% | 1.6% | 1984 |
| Thomas County (this page) | 179 | 90.5% | 9.5% | 0% | 1978 |
| Coweta County | 173 | 80.3% | 19.1% | 0.6% | 1988 |
| Laurens County | 169 | 69.8% | 26.6% | 3.6% | 1972 |
| Carroll County | 168 | 72.6% | 26.8% | 0.6% | 1977 |
| Clayton County | 168 | 82.7% | 16.1% | 1.2% | 1982 |
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 Thomas 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 Thomas County, both outside Georgia so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside GA (179 bridges here).
- Graham County, AZ · 179 bridges
- Carroll County, IL · 179 bridges
- Fremont County, IA · 179 bridges
- Morris County, KS · 179 bridges
Similar average build year
Nearest mean year-built outside GA (1978 here).
- Orange County, CA · avg 1978 · 1,164 bridges
- Sumner County, KS · avg 1978 · 659 bridges
- Allen County, IN · avg 1978 · 613 bridges
- Livingston County, IL · avg 1978 · 579 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (0)
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.