County profile · official public datasets

York County, SC

288 public highway bridges tracked in the FHWA National Bridge Inventory: 42.7% rated Good, 49.7% Fair, 7.6% Poor.

288
Public bridges
42.7%
Good condition
7.6%
Poor condition

The verdict

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

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

32nd
of 46 on Poor share
7.6%
Poor-condition share
288
public highway bridges
1984
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.

York County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, York County ranks #32 of 46 South Carolina counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.6%). York County, South Carolina contains 288 public highway bridges. Roughly 42.7% are rated “Good,” 49.7% “Fair,” and 7.6% “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

288

Public highway bridges in York County

Good condition

42.7%

123 of 288 rated 7-9

Fair condition

49.7%

143 of 288 rated 5-6

Poor condition

7.6%

22 of 288 rated 4 or below

In-state Poor-share rank

#32 of 46

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

Condition distribution

Share of 288 NBI-tracked bridges by lowest applicable component rating.

Good
42.7% (123)
Fair
49.7% (143)
Poor
7.6% (22)

York County's Poor-condition bridges carry 60,350 vehicle crossings a day

That is 2.7% of the county's reported daily bridge traffic on 7.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,743 crossings a day against 4,077 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 288 of 288 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

38.9% of York County's bridges have passed the 50-year mark

112 of the 288 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 42.7% 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 23.5% of the county's Poor-condition bridge traffic

S-46-50 over MANCHESTER CREEK, built 1963, carries 14,200 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 22-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 60,350 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When York County's bridges were built

288 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1970s, when 69 of the county's bridges still in the inventory were built, which is 24% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1984, 7 years newer than the South Carolina average of 1977.

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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

The 5 South Carolina counties nearest York County in number of bridges, with their condition splits. Its 7.6% Poor share is the 4th-lowest of these 6. Its average build year of 1984 against a peer-group mean of 1977 is 7 years newer.

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

Bridge inventory size and condition shares for York County and the 5 South Carolina counties closest to it in inventory size
County Bridges Poor
Charleston County 336 2.4%
Pickens County 291 9.3%
York County (this page) 288 7.6%
Florence County 277 2.5%
Orangeburg County 273 5.5%
Laurens County 259 7.7%

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

Similar inventory size

Nearest county inventories outside SC (288 bridges here).

Similar average build year

Nearest mean year-built outside SC (1984 here).

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

All 288 Good 123 Fair 143 Poor 22

Poor-condition bridges (22)

S-46-1104

Poor

Over: CROWDERS CREEK

5.4 MI NE CLOVER, York, SC

Built 1972 Load: 8.7 t ADT: 450

S-46-181

Poor

Over: LITTLE ALLISON CREEK

5.2 MI E YORK, York, SC

Built 1951 Load: 13.3 t ADT: 475

S-46-103

Poor

Over: TOOLS FORK CREEK

3.0 MI W ROCK HILL, York, SC

Built 1968 Load: 13.6 t ADT: 650

S-46-235

Poor

Over: FORK BIG ALLISON CK

6.4 MI N YORK, York, SC

Built 1960 Load: 15.2 t ADT: 350

S-46-1086

Poor

Over: BEAVERDAM CREEK

1.8 MI N CLOVER, York, SC

Built 1960 Load: 15.2 t ADT: 1,650

S-46-170

Poor

Over: MCCLURES BRANCH

5.2 MI S YORK, York, SC

Built 1955 Load: 15.6 t ADT: 200

SC 49

Poor

Over: ALLISON CREEK

8.3 MI N E YORK, York, SC

Built 1959 Load: 15.6 t ADT: 7,500

S-46-40

Poor

Over: BULLOCKS CREEK

7.0 MI W YORK, York, SC

Built 1960 Load: 15.6 t ADT: 125

S-46-560

Poor

Over: STONY FORK CREEK

5.8 MI SW ROCK HILL, York, SC

Built 1970 Load: 15.6 t ADT: 375

S-46-50

Poor

Over: MANCHESTER CREEK

4.4 MI NE ROCK HILL, York, SC

Built 1963 Load: 15.9 t ADT: 14,200

S-46-1102

Poor

Over: BR TO BUCKHORN CREEK

3.8 MI W YORK, York, SC

Built 1971 Load: 16.5 t ADT: 150

S-46-1273

Poor

Over: CONRAD CREEK

2.5 MI S MCCONNELLS, York, SC

Built 1976 Load: 16.5 t ADT: 100

S-46-888

Poor

Over: BRYSON CREEK

2.2 MI W MCCONNELLS, York, SC

Built 1966 Load: 16.8 t ADT: 50

S-46-1257

Poor

Over: TURKEY CREEK

1.6 MI W YORK, York, SC

Built 1975 Load: 16.8 t ADT: 325

S-46-75

Poor

Over: TURKEY CREEK

2.2 MI W YORK, York, SC

Built 1939 Load: 20.4 t ADT: 2,600

SC 557

Poor

Over: BEAVER DAM CREEK

5.2 MI E OF CLOVER, York, SC

Built 1938 Load: 21.4 t ADT: 9,300

SC 211

Poor

Over: BROAD RIVER

5.1 MI W HICKORY GROVE, York, SC

Built 1956 Load: 22.0 t ADT: 650

US 21 NB

Poor

Over: S-46-697 & RR LC

6.9 MI S OF ROCK HILL, York, SC

Built 1966 Load: 24.3 t ADT: 10,700

S-46-1474

Poor

Over: MORRIS BRANCH

3.2 MI S CLOVER, York, SC

Built 1973 Load: 24.3 t ADT: 300

S-46-31

Poor

Over: U.S. 21

4.6 MI SE ROCK HILL, York, SC

Built 1965 Load: 26.9 t ADT: 2,300

SC 274

Poor

Over: BIG ALLISON CREEK

4.1 MI N OF NEWPORT, York, SC

Built 1975 Load: 30.8 t ADT: 6,900

S-46-64

Poor

Over: BEAVERDAM CREEK

10.2 MI N YORK, York, SC

Built 1975 Load: 36.9 t ADT: 1,000

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.