County profile · official public datasets

Marion County, GA

46 public highway bridges tracked in the FHWA National Bridge Inventory: 84.8% rated Good, 13% Fair, 2.2% Poor.

46
Public bridges: 84.8%
Good condition: 2.2%
Poor condition

The verdict

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

Marion 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.

118th
of 159 on Poor share: 2.2%
Poor-condition share: 46
public highway bridges: 1969
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.

Marion County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Marion County ranks #118 of 159 Georgia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.2%). Marion County, Georgia contains 46 public highway bridges. Roughly 84.8% are rated “Good,” 13% “Fair,” and 2.2% “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 Marion County

Good condition

84.8%

39 of 46 rated 7-9

Fair condition

13%

6 of 46 rated 5-6

Poor condition

2.2%

1 of 46 rated 4 or below

In-state Poor-share rank

#118 of 159

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

Condition distribution

Share of 46 NBI-tracked bridges by lowest applicable component rating.

Good

84.8% (39)

Fair

13% (6)

Poor

2.2% (1)

Marion County's Poor-condition bridges carry 70 vehicle crossings a day

That is 0.3% of the county's reported daily bridge traffic on 2.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 70 crossings a day against 561 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 46 of 46 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

82.6% of Marion County's bridges have passed the 50-year mark

38 of the 46 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 84.8% 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

WALTER WELLS RD over SHOAL CREEK, built 1960, carries 70 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 70 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1950s

5
1960s

32
1970s

1
2000s

6
2020s

2

What this shows Construction peaked in the 1960s, when 32 of the county's bridges still in the inventory were built, which is 69.6% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1969, 8 years older than the Georgia average of 1977.

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

The 5 Georgia counties nearest Marion County in number of bridges, with their condition splits. Its 2.2% Poor share is the 2nd-lowest of these 6. Its average build year of 1969 against a peer-group mean of 1973 is in line with the group.

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

Bridge inventory size and condition shares for Marion County and the 5 Georgia counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Ben Hill County	47	85.1%	10.6%	4.3%	1973
Long County	47	72.3%	27.7%	0%	1969
Butts County	46	54.3%	39.1%	6.5%	1978
Towns County	46	65.2%	30.4%	4.3%	1973
Marion County (this page)	46	84.8%	13%	2.2%	1969
Dawson County	45	68.9%	28.9%	2.2%	1970

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

Similar inventory size

Nearest county inventories outside GA (46 bridges here).

Russell County, KY · 46 bridges
Somerset County, MD · 46 bridges
Hill County, MT · 46 bridges
Prairie County, MT · 46 bridges

Similar average build year

Nearest mean year-built outside GA (1969 here).

Cook County, IL · avg 1969 · 1,721 bridges
Fresno County, CA · avg 1969 · 916 bridges
Cuyahoga County, OH · avg 1969 · 871 bridges
Ventura County, CA · avg 1969 · 501 bridges

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

All 46 Good 39 Fair 6 Poor 1

Good-condition bridges (39)

Sort:

Marion County Bridge Snapshot

Condition distribution

Marion County's Poor-condition bridges carry 70 vehicle crossings a day

82.6% of Marion County's bridges have passed the 50-year mark

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

How Marion 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 (39)

FOUCHE ROAD

BILL MERRITT ROAD

SLAUGHTER ROAD

JAMES ROGERS RD

HARTS MILL ROAD

MT CARMEN CH ROAD

PINEVILLE ROAD

SPRING HILL ROAD

SR 355

SR 355

PLANTATION DRIVE

SR 137

HARBUCK POND RD

HARBUCK POND RD

WOODY ROAD

COLE JERNIGAN RD

BILL MERRITT ROAD

PINE KNOT LOOP

CLARKE DUNCAN HWY

PINEVILLE ROAD

JOHNNY MILLER RD

GRITS MILL ROAD

FIRETOWER RD

FRANK POWELL RD

MT ZION CHURCH RD

SR 355

SR 240

CLARKE DUNCAN HWY

BLUEVILLE ROAD

SR 137

SR 137

BROAD STREET

SR 352

PINE KNOT LOOP

SR00137

BRANTLEY ROAD

SR 355 PINE KNOT L

DOYLE ROAD

BOB SAVEL ROAD

Related