County profile · official public datasets

Glynn County, GA

84 public highway bridges tracked in the FHWA National Bridge Inventory: 66.7% rated Good, 32.1% Fair, 1.2% Poor.

84
Public bridges: 66.7%
Good condition: 1.2%
Poor condition

The verdict

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

Glynn County posts a higher-than-median Poor-condition share among rated counties in the state across rated county bridge inventory.

88th
of 159 on Poor share: 1.2%
Poor-condition share: 84
public highway bridges: 1976
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.

Glynn County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Glynn County ranks #88 of 159 Georgia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1.2%). Glynn County, Georgia contains 84 public highway bridges. Roughly 66.7% are rated “Good,” 32.1% “Fair,” and 1.2% “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 Glynn County

Good condition

66.7%

56 of 84 rated 7-9

Fair condition

32.1%

27 of 84 rated 5-6

Poor condition

1.2%

1 of 84 rated 4 or below

In-state Poor-share rank

#88 of 159

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

Condition distribution

Share of 84 NBI-tracked bridges by lowest applicable component rating.

Good

66.7% (56)

Fair

32.1% (27)

Poor

1.2% (1)

Glynn County's Poor-condition bridges carry 32,900 vehicle crossings a day

That is 1.9% of the county's reported daily bridge traffic on 1.2% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 32,900 crossings a day against 22,118 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 84 of 84 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

45.2% of Glynn County's bridges have passed the 50-year mark

38 of the 84 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 66.7% 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

SR 25SE TORRAS CAU over MACKAY RIVER, built 1986, carries 32,900 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 32,900 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

1
1940s

1
1950s

12
1960s

16
1970s

24
1980s

8
1990s

16
2000s

3
2010s

3

What this shows Construction peaked in the 1970s, when 24 of the county's bridges still in the inventory were built, which is 28.6% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1976) matches the Georgia average (1977).

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

The 5 Georgia counties nearest Glynn County in number of bridges, with their condition splits. Its 1.2% Poor share is the 3rd-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1979 is in line with the group.

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

Bridge inventory size and condition shares for Glynn County and the 5 Georgia counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Early County	85	92.9%	7.1%	0%	1979
Union County	85	36.5%	58.8%	4.7%	1975
Elbert County	84	69%	26.2%	4.8%	1971
Paulding County	84	71.4%	28.6%	0%	1987
Glynn County (this page)	84	66.7%	32.1%	1.2%	1976
Wayne County	83	85.5%	13.3%	1.2%	1983

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

Similar inventory size

Nearest county inventories outside GA (84 bridges here).

Chaffee County, CO · 84 bridges
Dickinson County, IA · 84 bridges
Meade County, KS · 84 bridges
Anderson County, KY · 84 bridges

Similar average build year

Nearest mean year-built outside GA (1976 here).

Marion County, IN · avg 1976 · 958 bridges
Mohave County, AZ · avg 1976 · 641 bridges
Comanche County, OK · avg 1976 · 593 bridges
Prince George's County, MD · avg 1976 · 576 bridges

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

All 84 Good 56 Fair 27 Poor 1

Good-condition bridges (56)

Sort:

Glynn County Bridge Snapshot

Condition distribution

Glynn County's Poor-condition bridges carry 32,900 vehicle crossings a day

45.2% of Glynn County's bridges have passed the 50-year mark

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

How Glynn 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 (56)

SR 25 SPUR NBL

SR 25 SPUR SBL

FAS 615

I-95 NBL

E BEACH CAUSEWAY

US 17 SR 25 OCEAN

CR 78

SEA ISLAND ROAD

I-95 SBL

US 17 SR 25 OCEAN

CR 723 PENINSULA D

SR 303

I-95 NBL

I-95 SBL

OLD JESUP ROAD

CR 27 BLYTHE ISLAN

SR 32 HARRELL HIGH

SR 32 HARRELL HIGH

M.E THOMPSON BR.

I-95 NBL

I-95 SBL

CR 59 OAK GROVE RD

SR 520 EBL

I-95 NBL

I-95 NBL

I-95 SBL

I-95 SBL & RAMP

I-95 NBL

I-95 SBL

I-95 NBL

SR 32 HARRELL HIGH

SR 32 HARRELL HIGH

SR 99 GRANTS FERRY

BUCK SWAMP ROAD

SR 520 WBL US 17

US 17 SR 520 SR 25

SR 25SE TORRAS CAU

SIDNEY LANIER BRID

SR 99 - I-95B LOOP

I-95 NBL AND SBL

GLYNN CO PARKWAY

JEKYLL ISLAND ROAD

CR 582 TORRAS CAUS

US 17 SR 25 OCEAN

US-25 341 SR 27

US-25 US-341 SR

US-25 US-341 SR

US-25 US-341 SR

SR 99

US-25 US-341 SR

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