Total bridges
69
Public highway bridges in Irwin County
County profile · official public datasets
69 public highway bridges tracked in the FHWA National Bridge Inventory: 75.4% rated Good, 24.6% Fair, 0% Poor.
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Irwin County pairs a top-quartile lowest Poor-condition share among rated counties in the state with an older average build year than the state inventory.
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.
According to the Federal Highway Administration's 2024 National Bridge Inventory, Irwin County ranks #35 of 159 Georgia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Irwin County, Georgia contains 69 public highway bridges. Roughly 75.4% are rated “Good,” 24.6% “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.
Total bridges
69
Public highway bridges in Irwin County
Good condition
75.4%
52 of 69 rated 7-9
Fair condition
24.6%
17 of 69 rated 5-6
Poor condition
0%
0 of 69 rated 4 or below
In-state Poor-share rank
#35 of 159
Among Georgia counties with 5+ bridges, lower share ranks better
Share of 69 NBI-tracked bridges by lowest applicable component rating.
47 of the 69 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 75.4% 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.
69 bridges with a recorded construction year, grouped by decade
1920–1929
1 bridges
1930–1939
1 bridges
1940–1949
5 bridges
1950–1959
11 bridges
1960–1969
27 bridges
1970–1979
4 bridges
1980–1989
2 bridges
1990–1999
14 bridges
2010–2019
3 bridges
2020–2029
1 bridges
What this shows Construction peaked in the 1960s, when 27 of the county's bridges still in the inventory were built, which is 39.1% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1971, 6 years older than the Georgia average of 1977.
The 5 Georgia counties nearest Irwin County in number of bridges, with their condition splits. Its 0% Poor share is the 3rd-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1973 is in line with the group.
Showing the 5 closest of 158 Georgia counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Jasper County | 70 | 57.1% | 38.6% | 4.3% | 1975 |
| Treutlen County | 70 | 85.7% | 14.3% | 0% | 1971 |
| Turner County | 70 | 92.9% | 7.1% | 0% | 1969 |
| Irwin County (this page) | 69 | 75.4% | 24.6% | 0% | 1971 |
| Columbia County | 68 | 91.2% | 8.8% | 0% | 1977 |
| Talbot County | 68 | 66.2% | 26.5% | 7.4% | 1973 |
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 Irwin County's. Source: FHWA National Bridge Inventory, 2024 release.
Two NBI-derived peer sets for Irwin County, both outside Georgia so the neighborhoods are not the same-state size table above.
Nearest county inventories outside GA (69 bridges here).
Nearest mean year-built outside GA (1971 here).
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Over: SATILLA CREEK
2 MI W OF OSIERFIELD, Irwin, GA
Over: WILLACOOCHEE RIVER O/F
5.2 MI SE OF OCILLA, Irwin, GA
Over: REEDY CREEK
APP 6 MI S OF OCILLA, Irwin, GA
Over: REEDY CREEK
APP 5 MI SW OF OCILLA, Irwin, GA
Over: HAT CREEK
12 MI W OF OCILLA, Irwin, GA
Over: ALAPAHA RIVER TRIB.
APP 9.5 MI SW OF OCILLA, Irwin, GA
Over: LITTLE BRUSHY CREEK
APP 3.9 MI SE OF OCILLA, Irwin, GA
Over: SATILLA CREEK
6.4 MI NE OF OCILLA, Irwin, GA
Over: BIG CREEK
APP 3 MI N OF IRWINVILLE, Irwin, GA
Over: WILLACOOCHEE CREEK
3.1 MI N OF OCILLA, Irwin, GA
Over: MILL CREEK
APP 7 MI SW OF OCILLA, Irwin, GA
Over: STUMP CREEK
OCILLA - SOUTHSIDE, Irwin, GA
Over: SAND CREEK
APP 5 MI N OF WATERLOO, Irwin, GA
Over: STUMP CREEK
2 MI S OF OCILLA, Irwin, GA
Over: REEDY CREEK
5.2 MI W OF OCILLA, Irwin, GA
Over: SAND CREEK
11 MI W OF OCILLA, Irwin, GA
Over: STUMP CREEK
APP 1 MI W OF OCILLA, Irwin, GA
Over: ALAPAHA RIVER OVERFLOW
APP 10 MI SW OF OCILLA, Irwin, GA
Over: ALAPAHA RIVER OVERFLOW
APP 9.5 MI SW OF OCILLA, Irwin, GA
Over: BIG CREEK
3 MI NW OF IRWINVILLE, Irwin, GA
Over: ALAPAHA RIVER
5 MI NW OF IRWINVILLE, Irwin, GA
Over: BENS BRANCH
APP 11 MI E OF OCILLA, Irwin, GA
Over: WILLACHOOCHEE RIVER TRIB
APP 9.5 MI SE OF OCILLA, Irwin, GA
Over: HUNTERS CREEK
0.4 MI E OF OSIERFIELD, Irwin, GA
Over: LITTLE SAND CREEK
APP 2 MI N OF WATERLOO, Irwin, GA
Over: FACTORY CREEK
APP 1 MI W OF IRWINVILLE, Irwin, GA
Over: LITTLE BRUSHY CREEK
APP 6 MI SE OF OCILLA, Irwin, GA
Over: BIG CREEK
13 MI NW OF OCILLA, Irwin, GA
Over: LITTLE BRUSHY CREEK
3.5 MI SE OF OCILLA, Irwin, GA
Over: WILLACOOCHEE RIVER TRIB.
4.5 MI SE OF OCILLA, Irwin, GA
Over: SAND HILL BRANCH
10.2 MI SE OF OCILLA, Irwin, GA
Over: BEE GUM BRANCH
11 MI SE OF OCILLA, Irwin, GA
Over: SAND CREEK
APP 2 MI N OF WATERLOO, Irwin, GA
Over: REEDY CREEK
5.3 MI S OF OCILLA, Irwin, GA
Over: WILLACOOCHEE RIVER
7.3 MI SE OF OCILLA, Irwin, GA
Over: LITTLE CREEK
APP 3 MI W OF OCILLA, Irwin, GA
Over: WILLACOOCHEE RIVER TRIB.
7 MI SE OF OCILLA, Irwin, GA
Over: REEDY CREEK
6 MI W OF OCILLA, Irwin, GA
Over: SATILLA CREEK
8.5 MI SE OF OCILLA, Irwin, GA
Over: WILLACOOCHEE RIVER
5.4 MI SE OF OCILLA, Irwin, GA
Over: REEDY CREEK
1.5 MI E OF IRWINVILLE, Irwin, GA
Over: BIG CREEK
APP 6 MI N OF IRWINVILLE, Irwin, GA
Over: FACTORY CREEK
APP 1 MI W OF IRWINVILLE, Irwin, GA
Over: SAND CREEK
APP 6 MI W OF IRWINVILLE, Irwin, GA
Over: REEDY CREEK
APP 1 MI E OF IRWINVILLE, Irwin, GA
Over: WIGGINS CREEK TRIB.
APP 2 MI E OF OSIERFIELD, Irwin, GA
Over: LITTLE BRUSHY CREEK TRIB
APP 4 MI S OF OCILLA, Irwin, GA
Over: BRUSHY CREEK
APP 6 MI NE OF OCILLA, Irwin, GA
Over: 17 MILE RIVER
4.5 MI NW OF BROXTON, Irwin, GA
Over: STUMP CREEK RELIEF
APP 3 MI S OCILLA, Irwin, GA
Read our methodology - how this data is sourced, computed, and verified.
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.