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

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

Bridge inventory deck-condition mix — South Carolina (FHWA NBI)

South Carolina34.766493699036324%49.03632320237213%GoodFairPoorStructurally 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.

16

Idaho

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

28

Mississippi

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

45

South Carolina

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

55

Wisconsin

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

37

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 176 RAMP

Good

Over: I-585 WB EXIT

3.6 MI N OF SPARTANBURG, Spartanburg, SC

Built 2006 Load: 40.2 t ADT: 1,300

S-44-30

Good

Over: BIG BROWNS CREEK

4.9 MI N UNION, Union, SC

Built 1988 Load: 40.2 t ADT: 550

S-44-36

Good

Over: TINKER CREEK

6.6 MI W OF CARLISLE, Union, SC

Built 1989 Load: 40.2 t ADT: 275

S-44-57

Good

Over: LITTLE BROWNS CREEK

5.9MI NE OF UNION, Union, SC

Built 1991 Load: 40.2 t ADT: 700

SC 377

Good

Over: BLACK RIVER SWAMP (1)

4 MI S OF KINGSTREE, Williamsburg, SC

Built 2008 Load: 40.2 t ADT: 3,600

SC 377

Good

Over: BLACK RIVER SWAMP (3)

4 MI S OF KINGSTREE, Williamsburg, SC

Built 2008 Load: 40.2 t ADT: 3,600

S-46-919

Good

Over: BR OF CLARKS CREEK

6.4 MI W CLOVER, York, SC

Built 2007 Load: 40.2 t ADT: 50

S-4-459

Good

Over: ROCKY RIVER

7.6 MI SE ANDERSON, Anderson, SC

Built 2016 Load: 40.5 t ADT: 75

S-4-280

Good

Over: THREE & TWENTY CREEK

9.5MI NW ANDERSON, Anderson, SC

Built 2016 Load: 40.5 t ADT: 1,550

SC 27

Good

Over: MERKEL BRANCH

18.0 MI W MONCKS CORNER, Berkeley, SC

Built 1994 Load: 40.5 t ADT: 2,700

S-9-16

Good

Over: LITTLE LIMESTONE CREEK

9.5 MI W ST. MATTHEWS, Calhoun, SC

Built 1994 Load: 40.5 t ADT: 350

S-20/BOHICKET RD

Good

Over: BOHICKET CREEK

9.8 MI SW CHARLESTON, Charleston, SC

Built 2008 Load: 40.5 t ADT: 15,700

SC 165/HIGHWAY165

Good

Over: CAW CAW SWAMP-NO.2

2.4 MI NW OF RAVENEL, Charleston, SC

Built 2019 Load: 40.5 t ADT: 4,600

S-83

Good

Over: BUFFALO CREEK

2.0 MI NW OF BLACKSBURG, Cherokee, SC

Built 2018 Load: 40.5 t ADT: 3,400

SC 63/SNIDERS HWY

Good

Over: LITTLE SALKEHATCHIE RIV

11.7 MI W OF WALTERBORO, Colleton, SC

Built 2005 Load: 40.5 t ADT: 2,800

SC 20

Good

Over: SCL RR

8 MI SW OF GREENVILLE, Greenville, SC

Built 1950 Load: 40.5 t ADT: 4,800

S-23-166

Good

Over: ENOREE RIVER

3.6MI SW GREER, Greenville, SC

Built 2005 Load: 40.5 t ADT: 21,800

S-26-110

Good

Over: BEAR SWAMP

1 MI S CONWAY, Horry, SC

Built 2011 Load: 40.5 t ADT: 2,200

S-165 NB

Good

Over: CRABTREE SWAMP

.5 MI SOUTH OF CONWAY, Horry, SC

Built 2003 Load: 40.5 t ADT: 4,600

L-1269/WISE RD

Good

Over: GRIER SWAMP

6 MI N OF CONWAY, Horry, SC

Built 2021 Load: 40.5 t ADT: 250

S-29-260

Good

Over: BEAVER CREEK

3.7 MI SW HEATH SPRINGS, Lancaster, SC

Built 1996 Load: 40.5 t ADT: 125

S-30-347

Good

Over: BR OF BOYDS MILL POND

12.5 MI W LAURENS, Laurens, SC

Built 2008 Load: 40.5 t ADT: 550

S-36-170

Good

Over: CRIMS CREEK

14.2 MI E NEWBERRY, Newberry, SC

Built 2016 Load: 40.5 t ADT: 100

US 76/US 378

Good

Over: MILL CREEK

8 MI SE OF COLUMBIA, Richland, SC

Built 2018 Load: 40.5 t ADT: 34,100

US 378 EB

Good

Over: BLACK RIVER

10 MI E OF SUMTER, Sumter, SC

Built 1972 Load: 40.5 t ADT: 5,750

S-44-30

Good

Over: BROWNS CREEK

3.6 MI N UNION, Union, SC

Built 1988 Load: 40.5 t ADT: 550

S-44-30

Good

Over: BILL GILLIAM CREEK

4.3 MI N UNION, Union, SC

Built 1988 Load: 40.5 t ADT: 550

SC 41

Good

Over: SMITH BRANCH

4 MI NE OF ANDREWS, Williamsburg, SC

Built 1942 Load: 40.5 t ADT: 4,100

L-7-383

Good

Over: BRICKYARD CREEK

4.6 MI NW BEAUFORT, Beaufort, SC

Built 2016 Load: 40.8 t ADT: 200

S-11-123

Good

Over: KINGS CREEK

5.5MI NE BLACKSBURG, Cherokee, SC

Built 2003 Load: 40.8 t ADT: 100

S-14-125

Good

Over: FELLOWSHIP BRANCH

5MI SW MANNING, Clarendon, SC

Built 2017 Load: 40.8 t ADT: 225

S-113/RED ROOT RD

Good

Over: INDIAN CREEK

9.2 MI NW WALT'B, Colleton, SC

Built 2006 Load: 40.8 t ADT: 125

S-16-45

Good

Over: SPARROW SWAMP

3 MI E OF LAMAR, Darlington, SC

Built 1985 Load: 40.8 t ADT: 850

S-17-175

Good

Over: MAPLE SWAMP BRANCH

2MI S DILLON, Dillon, SC

Built 1991 Load: 40.8 t ADT: 550

US 378

Good

Over: BR OF LYNCHES LAKE

7MI NW OF LAKE CITY, Florence, SC

Built 2006 Load: 40.8 t ADT: 5,300

C-23-512

Good

Over: ROCKY CREEK

5.5 MI E.GREENVILLE, Greenville, SC

Built 2012 Load: 40.8 t ADT: 3,100

S-23-1025

Good

Over: BRUSHY CREEK

5.3 MI SW GREER, Greenville, SC

Built 1990 Load: 40.8 t ADT: 16,000

S-23-180

Good

Over: BELUE CREEK

13.8MI N GREER, Greenville, SC

Built 1999 Load: 40.8 t ADT: 250

SC 72

Good

Over: MILLERS FORK CREEK

10.8 MI E OF LAURENS, Laurens, SC

Built 2002 Load: 40.8 t ADT: 2,400

S-33-39

Good

Over: LITTLE RIVER

4.3 MI SE MT CARMEL, McCormick, SC

Built 1997 Load: 40.8 t ADT: 125

S-39-129

Good

Over: TRIB TO TOWN CREEK

3.5 MI NE PICKENS, Pickens, SC

Built 2015 Load: 40.8 t ADT: 200

S-39-51

Good

Over: TWELVE MILE CREEK

1 MI N NORRIS, Pickens, SC

Built 1979 Load: 40.8 t ADT: 850

C-39-3277

Good

Over: MIDDLE FORK TWELVE CREEK

5.3 MI NE OF PICKENS, Pickens, SC

Built 2005 Load: 40.8 t ADT: 351

S-40-39

Good

Over: WATEREE CREEK

3.0 MI NW WHITE ROCK, Richland, SC

Built 1985 Load: 40.8 t ADT: 1,800

S-46-650

Good

Over: WILDCAT CREEK

CITY OF ROCK HILL, York, SC

Built 2014 Load: 40.8 t ADT: 1,100

SC 165

Good

Over: TIDAL CREEK

AT MEGGETT, Charleston, SC

Built 2019 Load: 41.1 t ADT: 1,050

L-3394/WELANDCRSG

Good

Over: FILBIN CREEK

IN NORTH CHARLESTON, Charleston, SC

Built 2005 Load: 41.1 t ADT: 600

S-12-300

Good

Over: TRIB TO SHANNON CREEK

9 MI S OF CHESTER, Chester, SC

Built 2023 Load: 41.1 t ADT: 125

S-13-157

Good

Over: THOMPSON CREEK

4.8 MI NE PAGELAND, Chesterfield, SC

Built 2004 Load: 41.1 t ADT: 600

S-13-296

Good

Over: CEDAR CREEK

2.8 MI W MCBEE, Chesterfield, SC

Built 1999 Load: 41.1 t ADT: 700

Showing 4,401-4,450 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.