County profile · official public datasets

Lamar County, GA

64 public highway bridges tracked in the FHWA National Bridge Inventory: 56.3% rated Good, 40.6% Fair, 3.1% Poor.

64
Public bridges: 56.3%
Good condition: 3.1%
Poor condition

The verdict

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

Lamar County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

128th
of 159 on Poor share: 3.1%
Poor-condition share: 64
public highway bridges: 1967
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.

Lamar County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Lamar County ranks #128 of 159 Georgia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.1%). Lamar County, Georgia contains 64 public highway bridges. Roughly 56.3% are rated “Good,” 40.6% “Fair,” and 3.1% “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.

Total bridges

Public highway bridges in Lamar County

Good condition

56.3%

36 of 64 rated 7-9

Fair condition

40.6%

26 of 64 rated 5-6

Poor condition

3.1%

2 of 64 rated 4 or below

In-state Poor-share rank

#128 of 159

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

Condition distribution

Share of 64 NBI-tracked bridges by lowest applicable component rating.

Good

56.3% (36)

Fair

40.6% (26)

Poor

3.1% (2)

Lamar County's Poor-condition bridges carry 660 vehicle crossings a day

That is 0.2% of the county's reported daily bridge traffic on 3.1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 330 crossings a day against 3,933 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 64 of 64 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

73.4% of Lamar County's bridges have passed the 50-year mark

47 of the 64 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 56.3% 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 72.7% of the county's Poor-condition bridge traffic

CANNAFAX FARM RD over LITTLE POTATO CREEK, built 1960, carries 480 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 2-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 660 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

2
1930s

1
1940s

3
1950s

16
1960s

23
1970s

7
1980s

4
1990s

2
2000s

3
2010s

3

What this shows Construction peaked in the 1960s, when 23 of the county's bridges still in the inventory were built, which is 35.9% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1967, 10 years older than the Georgia average of 1977.

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

The 5 Georgia counties nearest Lamar County in number of bridges, with their condition splits. Its 3.1% Poor share is the 5th-lowest of these 6. Its average build year of 1967 against a peer-group mean of 1979 is 12 years older.

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

Bridge inventory size and condition shares for Lamar County and the 5 Georgia counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Cook County	66	77.3%	22.7%	0%	1976
Pierce County	65	86.2%	13.8%	0%	1975
Hancock County	64	78.1%	12.5%	9.4%	1975
Jefferson County	64	81.3%	17.2%	1.6%	1978
Lamar County (this page)	64	56.3%	40.6%	3.1%	1967
Chattahoochee County	63	73%	25.4%	1.6%	1990

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

Similar inventory size

Nearest county inventories outside GA (64 bridges here).

Southeast Fairbanks County, AK · 64 bridges
Delta County, CO · 64 bridges
Sedgwick County, CO · 64 bridges
Sagadahoc County, ME · 64 bridges

Similar average build year

Nearest mean year-built outside GA (1967 here).

Los Angeles County, CA · avg 1967 · 3,547 bridges
Allegheny County, PA · avg 1967 · 1,294 bridges
Sonoma County, CA · avg 1967 · 609 bridges
Merced County, CA · avg 1967 · 528 bridges

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

All 64 Good 36 Fair 26 Poor 2

Good-condition bridges (36)

Sort:

Lamar County Bridge Snapshot

Condition distribution

Lamar County's Poor-condition bridges carry 660 vehicle crossings a day

73.4% of Lamar County's bridges have passed the 50-year mark

One structure carries 72.7% of the county's Poor-condition bridge traffic

How Lamar 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 (36)

SR 109

JACKSON ROAD

THE ROCK ROAD

J.E. TRICE ROAD

US 41

SR 36

SOUTH 6TH STREET

RAMAH CHURCH RD

COMMUNITY HOUSE RD

BUSH ROAD

FREDONIA CH ROAD

GROVE STREET

BROOK ROAD

GORDON ROAD

FIVE POINTS ROAD

OLD 41 HWY.

PHILLIP WELDON ROA

US 341 (NBL)

US 41 (NBL)

RUFFNER ROAD

CR 146 CRAWFORD RD

POTTS POND ROAD

US 341

US 41

PURDUE ROAD

EDIE CREEK ROAD

WELDON LAKE ROAD

CITY POND ROAD

PARKER BRANCH RD

CITY POND ROAD

SR 18

SR 36

SR 18

SR 36

HIGH FALLS ROAD

I-75

Related