State profile · Near national median SD

South Carolina bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in South Carolina - drawn straight from the FHWA National Bridge Inventory.

5,396
Public bridges
34.8%
Good condition
6.1%
Poor condition
6.1%
Structurally deficient

Data updated May 2026

Total Bridges

5,396

Public highway bridges in South Carolina

Good Condition

34.8%

1,876 bridges rated 7-9

-15.2pp vs 50% benchmark

Poor Condition

6.1%

329 bridges rated 0-4

Structurally Deficient

6.1%

329 bridges flagged for repair priority

-0.9pp vs national avg 7.0%

South Carolina vs national bridge condition

South Carolina - Good condition share 34.8%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

South Carolina - Structurally deficient share 20.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

South Carolina38.7%54.5%GoodFairPoor (structurally deficient)
Bridge inventory deck-condition mix - South Carolina (FHWA NBI)

Counties (46)

Abbeville 96 Aiken 103 Allendale 43 Anderson 267 Bamberg 48 Barnwell 45 Beaufort 45 Berkeley 136 Calhoun 34 Charleston 196 Cherokee 113 Chester 95 Chesterfield 126 Clarendon 85 Colleton 139 Darlington 95 Dillon 62 Dorchester 112 Edgefield 82 Fairfield 81 Florence 161 Georgetown 71 Greenville 373 Greenwood 75 Hampton 60 Horry 259 Jasper 73 Kershaw 94 Lancaster 110 Laurens 146 Lee 50 Lexington 135 Marion 61 Marlboro 52 McCormick 32 Newberry 111 Oconee 119 Orangeburg 160 Pickens 156 Richland 211 Saluda 66 Spartanburg 361 Sumter 100 Union 82 Williamsburg 108 York 167

South Carolina vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient, the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below South Carolina on the same metric.

ID

Idaho

5.51% top marginal rate
Structure
Progressive
Burden @ $100K
$1,742

MS

Mississippi

5.92% top marginal rate
Structure
Progressive
Burden @ $100K
$16,823
Selected

SC

South Carolina

6.10% top marginal rate
Structure
Progressive
Burden @ $100K
$5,396

WI

Wisconsin

6.13% top marginal rate
Structure
Progressive
Burden @ $100K
$14,851

NC

North Carolina

6.16% top marginal rate
Structure
Progressive
Burden @ $100K
$18,901

Bridges Needing Most Attention in South Carolina

Six lowest-condition bridges in South Carolina, ranked by composite NBI rating. Each is inspected at least every 24 months.

C-20-60

Poor

Over: BR OF MORRIS CR

8.4 MI SW OF WINNSBORO, Fairfield, SC

Built 1960 Load: 0.3 t ADT: 125

S-12-353

Poor

Over: BEAVER DAM CREEK

3MI NW GREAT FALLS, Chester, SC

Built 1974 Load: 0.6 t ADT: 200

C-30-548

Poor

Over: NORTH RABON CREEK

11.5MI NW OF LAURENS, Laurens, SC

Built 1989 Load: 0.6 t ADT: 200

S-34-64

Poor

Over: PITCH POT SWAMP

4MI W MARION, Marion, SC

Built 1967 Load: 1.0 t ADT: 200

S-39-250

Poor

Over: MACHINE CREEK

8.0 MI N EASLEY, Pickens, SC

Built 1963 Load: 1.0 t ADT: 2,400

C-11-288

Poor

Over: BR BROAD RIVER

3.8 MI SW BLACKBURG, Cherokee, SC

Built 1992 Load: 1.3 t ADT: 200

All Bridges in South Carolina

US 1

Unknown

Over: S C 191

GRANITVILLE, Aiken, SC

Built 1950 ADT: 6,900

US 1

Unknown

Over: S-753

GRANITVILLE, Aiken, SC

Built 1950 ADT: 850

SC 125

Unknown

Over: S-68

1 MI E OF N AUGUSTA, Aiken, SC

Built 1951 ADT: 1,150

US 278/SC 125

Unknown

Over: U S 1

CLEARWATER, Aiken, SC

Built 1952 ADT: 23,600

US 278/SC 125

Unknown

Over: S C 421

2 MI E OF N AUGUSTA, Aiken, SC

Built 1952 ADT: 2,400

SC 125

Unknown

Over: US 278

10 MI W OF JACKSON, Aiken, SC

Built 1952 ADT: 8,400

US 1

Unknown

Over: U S 1 CON INTERCHANGE

AT N. AUGUSTA, Aiken, SC

Built 1960 ADT: 3,500

US 1

Unknown

Over: L-4772

N AUGUSTA, Aiken, SC

Built 1960 ADT: 265

US 25

Unknown

Over: U.S. 1

1 MI S OF N AUGUSTA, Aiken, SC

Built 1960 ADT: 26,000

I-20 EB

Unknown

Over: S.C. 19

6 MI N OF AIKEN, Aiken, SC

Built 1968 ADT: 5,700

I-20 EB

Unknown

Over: S-980 & ABANDOND RR

5 MI N OF AIKEN, Aiken, SC

Built 1968 ADT: 37

S-2-105

Unknown

Over: OVER I-20

7.0 MI NW AIKEN, Aiken, SC

Built 1968 ADT: 36,700

S-2-253

Unknown

Over: I-20

5.0 MI NE N AUGUSTA, Aiken, SC

Built 1968 ADT: 43,700

I-20 EB

Unknown

Over: S.C. 191

8 MI NW OF AIKEN, Aiken, SC

Built 1969 ADT: 700

I-20 WB

Unknown

Over: S.C. 191

8 MI NW OF AIKEN, Aiken, SC

Built 1969 ADT: 700

I-20 WB

Unknown

Over: U.S. 1

9 MI N OF AIKEN, Aiken, SC

Built 1969 ADT: 5,900

S-2-779

Unknown

Over: I-20

7.0 MI NW AIKEN, Aiken, SC

Built 1969 ADT: 43,700

S-2-780

Unknown

Over: I-20

4.0 MI NW GRANITVILLE, Aiken, SC

Built 1969 ADT: 43,700

I-520 EB

Unknown

Over: US 1

NORTH AUGUSTA, Aiken, SC

Built 2003 ADT: 11,800

I-520 EB

Unknown

Over: S-365

NORTH AUGUSTA, Aiken, SC

Built 2009 ADT: 850

I-520 WB

Unknown

Over: S-365

NORTH AUGUSTA, Aiken, SC

Built 2009 ADT: 850

I-520 EB

Unknown

Over: SC 126

NORTH AUGUSTA, Aiken, SC

Built 2009 ADT: 4,650

S-33

Unknown

Over: I-520

NORTH AUGUSTA, Aiken, SC

Built 2009 ADT: 15,300

I-520 EB

Unknown

Over: SC 125

NORTH AUGUSTA, Aiken, SC

Built 2008 ADT: 6,300

C-2-1582

Unknown

Over: I-520

NORTH AUGUSTA, Aiken, SC

Built 2007 ADT: 14,900

C-2-1779

Unknown

Over: I-520

NORTH AUGUSTA, Aiken, SC

Built 2007 ADT: 14,900

I-520 WB

Unknown

Over: I-20

NORTH AUGUSTA, Aiken, SC

Built 2009 ADT: 43,700

US 29 BUS

Unknown

Over: C.& NW RR & S-688

CITY OF ANDERSON, Anderson, SC

Built 1940 ADT: 300

S-1178

Unknown

Over: U.S. 29

3.0 MI NW WILLIAMSTON, Anderson, SC

Built 1957 ADT: 13,200

US 29/SC 20 CON

Unknown

Over: U.S. 29 NBL

3.7MI SW OF WILLIAMSTON, Anderson, SC

Built 1957 ADT: 13,200

SC 20

Unknown

Over: S.C. 252

5.0 MI SW OF HONEA PATH, Anderson, SC

Built 1961 ADT: 4,300

S-4-71

Unknown

Over: OVER I-85

8.1 MI NW ANDERSON, Anderson, SC

Built 1961 ADT: 47,900

I-85 SBL

Unknown

Over: S-280 AND C.& NW RR

6.7MI NW OF ANDERSON, Anderson, SC

Built 1962 ADT: 725

US 76 EB

Unknown

Over: I-85

6.2MI NW OF ANDERSON, Anderson, SC

Built 1962 ADT: 23,950

US 178

Unknown

Over: I-85

5.9MI NW OF ANDERSON, Anderson, SC

Built 1962 ADT: 52,200

SC 24 EB

Unknown

Over: I-85

11.2 MI NW OF ANDERSON, Anderson, SC

Built 1962 ADT: 44,800

SC 187 NB

Unknown

Over: I-85

9.5 MI NW OF ANDERSON, Anderson, SC

Built 1962 ADT: 47,200

S-4-97

Unknown

Over: OVER I-85

6.9MI N ANDERSON, Anderson, SC

Built 1962 ADT: 62,700

S-4-1069

Unknown

Over: I-85

14.8 MI NW ANDERSON, Anderson, SC

Built 1962 ADT: 44,800

S-1171

Unknown

Over: I-85 OVERPASS

7.1 MI NE ANDERSON, Anderson, SC

Built 1962 ADT: 62,700

S-4-1174

Unknown

Over: I-85

8.4 MI NE OF ANDERSON, Anderson, SC

Built 1962 ADT: 62,700

S-4-1170

Unknown

Over: I-85

16.6 MI NW OF ANDERSON, Anderson, SC

Built 1962 ADT: 44,800

I-85

Unknown

Over: COUNTY ROAD UNDER I-85

5.2MI NW OF WILLIAMSTON, Anderson, SC

Built 1963 ADT: 125

SC 8

Unknown

Over: I-85

4.9MI NW OF WILLIAMSTON, Anderson, SC

Built 1963 ADT: 70,700

SC 81 NB

Unknown

Over: I-85

9.4MI NE OF ANDERSON, Anderson, SC

Built 2002 ADT: 62,700

S-4-96

Unknown

Over: I-85 S-291 OVERLAPS

6.0MI NW WILLIAMSTON, Anderson, SC

Built 1963 ADT: 70,700

SC 28 (WAS BYP)

Unknown

Over: U.S. 76

4.6MI NW OF ANDERSON, Anderson, SC

Built 2001 ADT: 29,400

US 76 EBL

Unknown

Over: SC 252 WBL

5.0MI SE OF ANDERSON, Anderson, SC

Built 1969 ADT: 2,900

SC 86 EB

Unknown

Over: I-85

6.4MI N OF WILLIAMSTON, Anderson, SC

Built 1988 ADT: 87,200

S-4-1156

Unknown

Over: I-85 OVERPASS

18.4 MI NE OF ANDERSON, Anderson, SC

Built 1988 ADT: 90,300

Showing 1-50 of 5,396 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

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

Every figure on PlainBridge 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.