County profile · official public datasets

Carroll County, GA

168 public highway bridges tracked in the FHWA National Bridge Inventory: 72.6% rated Good, 26.8% Fair, 0.6% Poor.

168
Public bridges: 72.6%
Good condition: 0.6%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Carroll County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 47%
lowest Poor share in state: 0.6%
Poor-condition share: 168
public highway bridges: 1977
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.

Carroll County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Carroll County ranks #74 of 159 Georgia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0.6%). Carroll County, Georgia contains 168 public highway bridges. Roughly 72.6% are rated “Good,” 26.8% “Fair,” and 0.6% “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

168

Public highway bridges in Carroll County

Good condition

72.6%

122 of 168 rated 7-9

Fair condition

26.8%

45 of 168 rated 5-6

Poor condition

0.6%

1 of 168 rated 4 or below

In-state Poor-share rank

#74 of 159

Among Georgia counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 168 NBI-tracked bridges by lowest applicable component rating.

Good

72.6% (122)

Fair

26.8% (45)

Poor

0.6% (1)

Carroll County's Poor-condition bridges carry 20 vehicle crossings a day

That is 0% of the county's reported daily bridge traffic on 0.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 20 crossings a day against 6,552 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 168 of 168 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

43.5% of Carroll County's bridges have passed the 50-year mark

73 of the 168 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 72.6% 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

BRICKYARD ROAD over BIG INDIAN CREEK, built 1975, 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.

1930s

6
1940s

5
1950s

18
1960s

25
1970s

51
1980s

16
1990s

22
2000s

10
2010s

10
2020s

5

What this shows Construction peaked in the 1970s, when 51 of the county's bridges still in the inventory were built, which is 30.4% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1977) matches the Georgia average (1977).

How Carroll County compares with Georgia's closest counties by inventory size

The 5 Georgia counties nearest Carroll County in number of bridges, with their condition splits. Its 0.6% Poor share is the 4th-lowest of these 6. Its average build year of 1977 against a peer-group mean of 1981 is in line with the group.

Showing the 5 closest of 158 Georgia counties eligible for comparison.

Bridge inventory size and condition shares for Carroll County and the 5 Georgia counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Coweta County	173	80.3%	19.1%	0.6%	1988
Laurens County	169	69.8%	26.6%	3.6%	1972
Clayton County	168	82.7%	16.1%	1.2%	1982
Troup County	168	73.8%	25.6%	0.6%	1980
Carroll County (this page)	168	72.6%	26.8%	0.6%	1977
Cherokee County	164	84.8%	15.2%	0%	1985

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 Carroll 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 Carroll County, both outside Georgia so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside GA (168 bridges here).

Wilcox County, AL · 168 bridges
Kings County, CA · 168 bridges
Clarke County, IA · 168 bridges
Greene County, IA · 168 bridges

Similar average build year

Nearest mean year-built outside GA (1977 here).

San Diego County, CA · avg 1977 · 1,632 bridges
King County, WA · avg 1977 · 1,238 bridges
Riverside County, CA · avg 1977 · 1,117 bridges
Shelby County, TN · avg 1977 · 1,077 bridges

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 168 Good 122 Fair 45 Poor 1

Good-condition bridges (122)

Sort:

Carroll County Bridge Snapshot

Condition distribution

Carroll County's Poor-condition bridges carry 20 vehicle crossings a day

43.5% of Carroll County's bridges have passed the 50-year mark

One structure carries 100% of the county's Poor-condition bridge traffic

How Carroll County compares with Georgia's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Good-condition bridges (122)

BANKHEAD HIGHWAY

JONES MILL ROAD

ROWLAND ROAD

US 27

BETHESDA CH ROAD

BLACK DIRT ROAD

PLOWSHARE ROAD

THOMAS-WILSON RD

US 78

HORSELY MILL ROAD

SR 5

SR 113

I-20 EBL

COLUMBIA DRIVE

FLAT ROCK ROAD

INDIAN CREEK ROAD

INDIAN CREEK ROAD

LOVVORN MILL ROAD

TAYLOR GIN ROAD

COWN ROAD

STATE LINE ROAD

SR 101

STEWART STREET

BILLINGS ROAD

NORTH PROSPECT AVE

CROSS PLAIN HULETT

HORSLEY MILL ROAD

VIRGINIA TRAIL

US 27 ALT SR 16

MCKENZE BRIDGE RD.

STATE LINE ROAD

BETHESDA CH ROAD

SMITHFIELD ROAD

TYUS-CARROLLTON RD

US 27

SR 113

LOVVORN ROAD

I-20 WBL

SR 5

SR 100

WILSON ROAD

SR 100

NORTHSIDE DRIVE

CLEM LOWELL ROAD

ASBURY ROAD

SR 5

SANDHILL HICKORY

THOMAS ROAD

VEAL BLACKJACK RD.

RAINEY ROAD

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