County profile · official public datasets

Hampton County, SC

113 public highway bridges tracked in the FHWA National Bridge Inventory: 25.7% rated Good, 68.1% Fair, 6.2% Poor.

113
Public bridges: 25.7%
Good condition: 6.2%
Poor condition

The verdict

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

Hampton 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.

27th
of 46 on Poor share: 6.2%
Poor-condition share: 113
public highway bridges: 1972
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.

Hampton County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Hampton County ranks #27 of 46 South Carolina counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.2%). Hampton County, South Carolina contains 113 public highway bridges. Roughly 25.7% are rated “Good,” 68.1% “Fair,” and 6.2% “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

113

Public highway bridges in Hampton County

Good condition

25.7%

29 of 113 rated 7-9

Fair condition

68.1%

77 of 113 rated 5-6

Poor condition

6.2%

7 of 113 rated 4 or below

In-state Poor-share rank

#27 of 46

Among South Carolina counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 113 NBI-tracked bridges by lowest applicable component rating.

Good

25.7% (29)

Fair

68.1% (77)

Poor

6.2% (7)

Hampton County's Poor-condition bridges carry 4,325 vehicle crossings a day

That is 1.1% of the county's reported daily bridge traffic on 6.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 618 crossings a day against 6,241 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 113 of 113 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

62.8% of Hampton County's bridges have passed the 50-year mark

71 of the 113 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 25.7% 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 46.2% of the county's Poor-condition bridge traffic

US 17 ALT over SCL RR & S-1, built 1938, carries 2,000 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 7-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 4,325 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

1
1930s

7
1940s

8
1950s

12
1960s

28
1970s

20
1980s

5
1990s

22
2000s

10

What this shows Construction peaked in the 1960s, when 28 of the county's bridges still in the inventory were built, which is 24.8% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1972, 5 years older than the South Carolina average of 1977.

How Hampton County compares with South Carolina's closest counties by inventory size

The 5 South Carolina counties nearest Hampton County in number of bridges, with their condition splits. Its 6.2% Poor share is the 5th-lowest of these 6. Its average build year of 1972 against a peer-group mean of 1974 is in line with the group.

Showing the 5 closest of 45 South Carolina counties eligible for comparison.

Bridge inventory size and condition shares for Hampton County and the 5 South Carolina counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Dillon County	128	25%	70.3%	4.7%	1972
Saluda County	125	40.8%	52.8%	6.4%	1973
Edgefield County	124	34.7%	62.9%	2.4%	1972
Georgetown County	113	33.6%	61.1%	5.3%	1977
Hampton County (this page)	113	25.7%	68.1%	6.2%	1972
Marion County	112	34.8%	60.7%	4.5%	1974

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 Hampton 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 Hampton County, both outside South Carolina so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside SC (113 bridges here).

Lake County, FL · 113 bridges
Chattooga County, GA · 113 bridges
Jersey County, IL · 113 bridges
Tipton County, IN · 113 bridges

Similar average build year

Nearest mean year-built outside SC (1972 here).

Santa Clara County, CA · avg 1972 · 964 bridges
Madison County, AL · avg 1972 · 710 bridges
Kern County, CA · avg 1972 · 668 bridges
York County, PA · avg 1972 · 569 bridges

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

All 113 Good 29 Fair 77 Poor 7

Fair-condition bridges (77)

Sort:

Hampton County Bridge Snapshot

Condition distribution

Hampton County's Poor-condition bridges carry 4,325 vehicle crossings a day

62.8% of Hampton County's bridges have passed the 50-year mark

One structure carries 46.2% of the county's Poor-condition bridge traffic

How Hampton County compares with South Carolina's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Fair-condition bridges (77)

S-25-50

S-25-380

S-25-140

S-25-69

S-25-42

S-25-13

S-25-13

S-25-530

S-25-547

S-25-593

S-25-108

S-25-68

S-25-12

S-25-41

S-25-526

S-25-255

US 601

S-25-39

S-25-17

S-25-524

S-25-852

S-25-543

S-25-20

S-25-13

S-25-17

C-25-194

C-25-538

C-25-588

S-25-526

S-25-591

US 321

US 321

S-25-13

S-25-50

S-25-50

SC 363

S-25-854

S-25-44

S-25-629

S-25-68

S-25-345

S-25-20

SC 68

US 278

US 278

S-25-140

SC 68

US 278

US 278

US 601

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