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

I-385 NB

Unknown

Over: S-23-564 & CPDR

6.3 MI E OF GREENVILLE, Greenville, SC

Built 2019 ADT: 12,000

I-185 NB

Unknown

Over: I-85

5.0 SW OF GREENVILLE, Greenville, SC

Built 1999 ADT: 54,500

I-85 BRIDGE RAMP

Unknown

Over: I-385 &I-85

5.6 MI SE OF GREENVILLE, Greenville, SC

Built 2019 ADT: 61,700

I-385 BRIDGE RAMP

Unknown

Over: I-85 & I-385

5.6 MI SE OF GREENVILLE, Greenville, SC

Built 2019 ADT: 65,150

RAMP OFF I-385 SB

Unknown

Over: I-85

5.7 MI SE OF GREENVILLE, Greenville, SC

Built 2019 ADT: 46,100

I-385

Unknown

Over: I-85

6 MI E OF GREENVILLE, Greenville, SC

Built 2019 ADT: 130,300

US 25 BYP

Unknown

Over: S.C. 34, R.R., & CO RD

2.7 MI SE OF GREENWOOD, Greenwood, SC

Built 1968 ADT: 4,900

I-95 NB

Unknown

Over: S-37

JASPER CO LN, Hampton, SC

Built 1969 ADT: 25

I-95 NB

Unknown

Over: S.C. 68 & S.C.L. RR

1.7 MI NW OF YEMASSEE, Hampton, SC

Built 1969 ADT: 2,300

I-95 SB

Unknown

Over: S.C. 68 & S.C.L. RR

1.7 MI NW OF YEMASSEE, Hampton, SC

Built 1969 ADT: 2,300

SC 90

Unknown

Over: S.C.L. RR & S-14

2.0MI E OF CONWAY, Horry, SC

Built 1937 ADT: 750

US 501 BYP

Unknown

Over: U.S.701

IN CONWAY, Horry, SC

Built 1958 ADT: 16,600

SC 9

Unknown

Over: U.S. 17

1.5MI NW OF CHERRY GROVE, Horry, SC

Built 1970 ADT: 41,600

SC 9 NBL

Unknown

Over: U.S. 17 SBL

3.0MI N OF CHERRY GROVE, Horry, SC

Built 1970 ADT: 31,600

US 17

Unknown

Over: LITTLE RV.S-236 & 1110

2.0MI N OF CHERRY GROVE, Horry, SC

Built 1971 ADT: 4,000

US 17

Unknown

Over: U.S. 501

2.0MI NW OF MYRTLE BEACH, Horry, SC

Built 1974 ADT: 60,700

US 17 NB

Unknown

Over: SC 544

2.0 MI NW SURFSIDE, Horry, SC

Built 1980 ADT: 13,900

US 17 SBL

Unknown

Over: SC 544

2.0 MI NW SURFSIDE, Horry, SC

Built 1980 ADT: 13,900

US 17 BUS SB

Unknown

Over: US 17

AT MURRELLS INLET, Horry, SC

Built 1980 ADT: 18,150

SC 9 SBL

Unknown

Over: US 701 & SCL RR

1.0 MI NE OF LORIS, Horry, SC

Built 1981 ADT: 5,950

SC 9 NBL

Unknown

Over: US 701 & SCL RR

1.0 MI NE OF LORIS, Horry, SC

Built 1981 ADT: 5,900

SC 544

Unknown

Over: SC 707 & S-611 & ICWW

AT SOCASTEE, Horry, SC

Built 1994 ADT: 20,200

S-26-97

Unknown

Over: US 501

7.5MI NW OF CONWAY, Horry, SC

Built 2000 ADT: 25,700

US 701

Unknown

Over: SC 22

5.5MI N OF CONWAY, Horry, SC

Built 2000 ADT: 8,800

SC 22 WB

Unknown

Over: C-1769 HUCKS RD

7.5 MI NE OF CONWAY, Horry, SC

Built 2000 ADT: 125

SC 22 EB

Unknown

Over: SC 90

5MI N BRIERCLIFF ACRES, Horry, SC

Built 2000 ADT: 7,550

SC 31 NBL

Unknown

Over: C-26-367 FIRETOWER RD

21.95 MI NE SOCASTEE, Horry, SC

Built 2002 ADT: 15,300

SC 31 NBL

Unknown

Over: SC 90

22.55 MI NE OF SOCASTEE, Horry, SC

Built 2002 ADT: 5,600

S-26-1315 SB

Unknown

Over: US 17

IN MYRTLE BEACH, Horry, SC

Built 2002 ADT: 23,400

S-26-1315

Unknown

Over: GRISSOM PARKWAY TUNNEL

IN MYRTLE BEACH, Horry, SC

Built 2002 ADT: 250

S-26-1315

Unknown

Over: SC 31

0.3 MI N. MYRTLE BEACH, Horry, SC

Built 2002 ADT: 49,200

C-26-638 LONG BAY

Unknown

Over: SC 31

5.5 MI W N MYRTLE BEACH, Horry, SC

Built 2002 ADT: 42,800

SC 31 SB

Unknown

Over: US 501

3 MI N. OF MYRTLE BEACH, Horry, SC

Built 2002 ADT: 25,050

SC 22 EB

Unknown

Over: US 17

1 MI N BRIARCLIFF ACRES, Horry, SC

Built 2000 ADT: 51,200

SC 31 NB

Unknown

Over: US 501

3 MI N. OF MYRTLE BEACH, Horry, SC

Built 2004 ADT: 30,350

SC 31 NB

Unknown

Over: SC 22

7 MI N OF MYRTLE BEACH, Horry, SC

Built 2002 ADT: 11,950

SC 31 SB

Unknown

Over: SC 22

7 MI N OF MYRTLE BEACH, Horry, SC

Built 2002 ADT: 11,950

S-26-1315

Unknown

Over: L-6311

IN MYRTLE BEACH, Horry, SC

Built 2002 ADT: 250

SC 31 SB

Unknown

Over: C-26-834

3 MI N OR N MYRTLE BEACH, Horry, SC

Built 2002 ADT: 2,250

SC 31 SBL RAMP

Unknown

Over: SC 31 & SC 22

3 MI N OR MYRTLE BEACH, Horry, SC

Built 2002 ADT: 42,800

SC 31 NBL RAMP

Unknown

Over: SC 31 & SC 22

6 MI N OF MYRTLE BEACH, Horry, SC

Built 2002 ADT: 23,900

US 17 NBL

Unknown

Over: SC 707/L-2907

MYRTLE BEACH CITY LIMIT, Horry, SC

Built 2017 ADT: 13,750

S-26-1244

Unknown

Over: US 17

MYRTLE BEACH, Horry, SC

Built 2001 ADT: 75,700

S-26-1244

Unknown

Over: ICWW & L-3658

MYRTLE BEACH, Horry, SC

Built 2010 ADT: 250

C-26-2903

Unknown

Over: US 501

1 MI S OF AYNOR, Horry, SC

Built 2010 ADT: 25,500

S-26-926

Unknown

Over: SC 31

1 MI W SOCASTEE, Horry, SC

Built 2016 ADT: 23,800

SC 31

Unknown

Over: SC 544

3 MI N MYRTLE BEACH, Horry, SC

Built 2004 ADT: 17,800

SC 31

Unknown

Over: SC 544

3 MI N MYRTLE BEACH, Horry, SC

Built 2004 ADT: 17,800

I-95 SB

Unknown

Over: SC 336

@ RIDGELAND, Jasper, SC

Built 1965 ADT: 5,250

S-27-29

Unknown

Over: I-95

0.8 MI SE RIDGELAND, Jasper, SC

Built 1965 ADT: 56,300

Showing 251-300 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.