State profile · Near median Poor share

South Carolina bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in South Carolina, based on the FHWA National Bridge Inventory.

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

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 whose lowest applicable component is rated 0-4

-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 - Poor-condition share 20.3%
National avg

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

South Carolina vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. 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 the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

All Bridges in South Carolina

I-85 BRIDGE RAMP

Unknown

Over: I-85 .

4.0 MI S OF GREER, Spartanburg, SC

Built 2006 ADT: 102,900

I-585

Unknown

Over: SC 85

4.0 MI N OF SPARTANBURG, Spartanburg, SC

Built 2005 ADT: 11,550

SC 110

Unknown

Over: I-85

2 MI N OF COWPENS, Spartanburg, SC

Built 2020 ADT: 67,100

S-43-152

Unknown

Over: RR CSXT & DIVINE STREET

TOWN OF SUMTER, Sumter, SC

Built 1940 ADT: 300

US 76

Unknown

Over: U.S. 521

3 MI NW OF SUMTER, Sumter, SC

Built 2013 ADT: 21,400

US 76

Unknown

Over: U.S. 15

TOWN OF SUMTER, Sumter, SC

Built 1957 ADT: 8,000

US 76/ US 378

Unknown

Over: US 401

TOWN OF SUMTER, Sumter, SC

Built 1958 ADT: 5,800

US 76/US 378

Unknown

Over: S-43-307 & RR CSXT

2 MI E OF SUMTER, Sumter, SC

Built 1958 ADT: 225

US 76

Unknown

Over: U.S. 76 BUSINESS

TOWN OF SUMTER, Sumter, SC

Built 1958 ADT: 3,900

US 15

Unknown

Over: S-43-114/1269 & RR CSXT

TOWN OF SUMTER, Sumter, SC

Built 2016 ADT: 1,400

US 378

Unknown

Over: I-95

8 MI SE OF MAYESVILLE, Sumter, SC

Built 1967 ADT: 33,700

SC 341

Unknown

Over: I-95

1 MI E OF S-61, Sumter, SC

Built 1967 ADT: 35,500

S-43-597

Unknown

Over: I-95

11 MI E OF MAYESVILLE, Sumter, SC

Built 1967 ADT: 35,500

SC 441

Unknown

Over: US 521

11 MI NW SUMTER, Sumter, SC

Built 1986 ADT: 9,500

S-43-269

Unknown

Over: US76/378&S-43-1428,1429

2 MI NW OF SUMTER, Sumter, SC

Built 1990 ADT: 13,900

S-43-1488

Unknown

Over: US 76/ US 378

9 MI W OF SUMTER, Sumter, SC

Built 1999 ADT: 18,900

SC 49

Unknown

Over: CITY ST IN LOCKHART

TOWN OF LOCKHART, Union, SC

Built 1959 ADT: 125

SC 9

Unknown

Over: S-31

TOWN OF LOCKHART, Union, SC

Built 2020 ADT: 1,200

US 21

Unknown

Over: SC 5

6.4 MI S ROCK HILL, York, SC

Built 1965 ADT: 5,700

US 21 NB

Unknown

Over: S-46-697 & RR LC

6.9 MI S OF ROCK HILL, York, SC

Built 1966 ADT: 375

US 21 SB

Unknown

Over: S-46-697 & RR LC

6.9 MI S OF ROCK HILL, York, SC

Built 1966 ADT: 375

S-46-160

Unknown

Over: US 21

6.5 MI SE ROCK HILL, York, SC

Built 1966 ADT: 21,400

S-46-49

Unknown

Over: I-77

1.8 MI SW FORT MILL, York, SC

Built 1972 ADT: 119,800

S-46-252

Unknown

Over: I-77

2.7 MI N FORT MILL, York, SC

Built 1972 ADT: 120,200

I-77

Unknown

Over: SC 122

3.5 MI NE OF ROCK HILL, York, SC

Built 1973 ADT: 23,700

I-77

Unknown

Over: US 21

3 MI N OF ROCK HILL, York, SC

Built 1973 ADT: 41,200

I-77

Unknown

Over: SC 161

4.4 MI N ROCK HILL, York, SC

Built 1973 ADT: 47,400

I-77

Unknown

Over: S-46-100

6.9 MI N OF ROCK HILL, York, SC

Built 1973 ADT: 3,800

I-77

Unknown

Over: S-46-1441

0.9 MI S OF NC STATE LN, York, SC

Built 1973 ADT: 39,400

S-46-285

Unknown

Over: S-341

CITY OF ROCK HILL, York, SC

Built 1973 ADT: 4,100

SC 160

Unknown

Over: I-77

1.8 MI NW OF FORT MILL, York, SC

Built 1973 ADT: 120,600

SC 460

Unknown

Over: I-77

10.2 MI N ROCK HILL, York, SC

Built 1973 ADT: 120,200

C-46-748

Unknown

Over: SC 122 & RR NS

CITY OF ROCK HILL, York, SC

Built 1973 ADT: 21,500

S-46-115

Unknown

Over: SC 122 & RR NS

CITY OF ROCK HILL, York, SC

Built 1974 ADT: 5,600

SC 122 EB

Unknown

Over: US 21

CITY OF ROCK HILL, York, SC

Built 1974 ADT: 7,350

SC 122 WB

Unknown

Over: US 21

CITY OF ROCK HILL, York, SC

Built 1974 ADT: 10,000

US 21

Unknown

Over: I-77

2.6 MI S OF ROCK HILL, York, SC

Built 1975 ADT: 58,200

S-46-284

Unknown

Over: I-77

4.0 MI NE ROCK HILL, York, SC

Built 1975 ADT: 90,200

S-46-714

Unknown

Over: I-77

3.9 MI S ROCK HILL, York, SC

Built 1976 ADT: 57,200

I-77 SB

Unknown

Over: SC 901

5.0 MI SE ROCK HILL, York, SC

Built 1977 ADT: 5,650

S-46-710

Unknown

Over: I-77

2.9 MI SE ROCK HILL, York, SC

Built 1978 ADT: 58,200

I-77 NB

Unknown

Over: S-245

3.2 MI SE ROCK HILL, York, SC

Built 1980 ADT: 1,650

I-77

Unknown

Over: SC 161

4.1 MILES N OF ROCK HILL, York, SC

Built 2003 ADT: 47,400

RAMP OFF I-77 NB

Unknown

Over: SC 161

4.1 MILES N OF ROCK HILL, York, SC

Built 2004 ADT: 47,400

RAMP ON I-77 SB

Unknown

Over: US 21

4 MILES NE OF ROCK HILL, York, SC

Built 2004 ADT: 41,200

C-1-120

Fair

Over: LONG CANE CREEK

4.3 MI SE OF ABBEVILLE, Abbeville, SC

Built 1967 ADT: 125

I-526 EB

Fair

Over: WANDO RIV & LOCAL ROADS

6 MI NE OF CHARLESTON, Charleston, SC

Built 1989 ADT: 35,650

I-526 WB

Fair

Over: WANDO RIV & LOCAL ROADS

6 MI NE OF CHARLESTON, Charleston, SC

Built 1989 ADT: 35,650

BR. OF COOTER CREE

Fair

Over: BRANCH

NO DATA ENTERED, Charleston, SC

Built 1988 ADT: 50

SC 151

Fair

Over: CEDAR CREEK

2.7 MI NW OF MCBEE, Chesterfield, SC

Built 1931 ADT: 6,800

Showing 501-550 of 5,396 bridges

Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.