County profile · official public datasets

McCormick County, SC

68 public highway bridges tracked in the FHWA National Bridge Inventory: 42.6% rated Good, 57.4% Fair, 0% Poor.

68
Public bridges: 42.6%
Good condition: 0%
Poor condition

The verdict

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

McCormick County pairs a top-5% lowest Poor-condition share among rated counties in the state with an older average build year than the state inventory.

Top 4%
lowest Poor share in state: 0%
Poor-condition share: 68
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.

McCormick County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, McCormick County ranks #2 of 46 South Carolina counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). McCormick County, South Carolina contains 68 public highway bridges. Roughly 42.6% are rated “Good,” 57.4% “Fair,” and 0% “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 McCormick County

Good condition

42.6%

29 of 68 rated 7-9

Fair condition

57.4%

39 of 68 rated 5-6

Poor condition

0 of 68 rated 4 or below

In-state Poor-share rank

#2 of 46

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

Condition distribution

Share of 68 NBI-tracked bridges by lowest applicable component rating.

Good

42.6% (29)

Fair

57.4% (39)

Poor

0% (0)

55.9% of McCormick County's bridges have passed the 50-year mark

38 of the 68 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 42.6% 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.

1920s

1
1930s

10
1940s

7
1950s

6
1960s

12
1970s

6
1980s

6
1990s

9
2000s

4
2010s

4
2020s

3

What this shows Construction peaked in the 1960s, when 12 of the county's bridges still in the inventory were built, which is 17.6% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1972, 5 years older than the South Carolina average of 1977.

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

The 5 South Carolina counties nearest McCormick County in number of bridges, with their condition splits. Its 0% Poor share is the 1st-lowest of these 6. Its average build year of 1972 against a peer-group mean of 1970 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 McCormick County and the 5 South Carolina counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Bamberg County	80	20%	67.5%	12.5%	1971
Barnwell County	76	30.3%	65.8%	3.9%	1966
Beaufort County	72	36.1%	59.7%	4.2%	1988
Allendale County	69	23.2%	63.8%	13%	1968
McCormick County (this page)	68	42.6%	57.4%	0%	1972
Calhoun County	64	20.3%	73.4%	6.3%	1959

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

Similar inventory size

Nearest county inventories outside SC (68 bridges here).

Bent County, CO · 68 bridges
Columbia County, GA · 68 bridges
Talbot County, GA · 68 bridges
Wilcox County, GA · 68 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 68 Good 29 Fair 39 Poor 0

Fair-condition bridges (39)

Sort:

McCormick County Bridge Snapshot

Condition distribution

55.9% of McCormick County's bridges have passed the 50-year mark

How McCormick 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 (39)

S-33-42

S-33-117

S-33-117

S-33-138

S-33-171

S-33-38

S-33-86

SC 823

S-33-23

S-33-21

SC 23

S-33-114

S-33-24

SC 28

S-33-467

S-33-260

S-33-38

S-33-40

LINKAY CREEK-Bridg

S-33-22

SC 283

S-33-138

US 378

S-33-87

SC 81

S-33-134

US 378

SC 28

SC 67

US 221

US 378

S-137

S-33-118

S-33-21

SC 28

SC 28

S-33-33

S-33-7

US 221

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