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%.

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.

All Bridges in South Carolina

S-40-33

Unknown

Over: I-77

0.20 MI E OF US 1, Richland, SC

Built 1995 ADT: 62,400

S-40-58

Unknown

Over: I-26

2.0 MI E OF BALLENTINE, Richland, SC

Built 2023 ADT: 62,800

S-42-41

Unknown

Over: SC 85

5.1 MI NW SPARTANBURG, Spartanburg, SC

Built 1958 ADT: 26,500

S-42-65

Unknown

Over: SC 85

3.4MI NW SPARTANBURG, Spartanburg, SC

Built 1958 ADT: 35,300

S-42-525

Unknown

Over: SC 85

4.0 MI W SPARTANBURG, Spartanburg, SC

Built 1958 ADT: 38,900

I-26 WB

Unknown

Over: SC 85

4.3 MI NW SPARTANBURG, Spartanburg, SC

Built 1959 ADT: 14,450

SC 14

Unknown

Over: I-85

4.0 MI S OF GREER, Spartanburg, SC

Built 2003 ADT: 124,000

SC 296

Unknown

Over: I-26

3.8 MI SW OF SPTBG, Spartanburg, SC

Built 2005 ADT: 51,100

S-42-12

Unknown

Over: I-85

4.0 MI S GREER, Spartanburg, SC

Built 2006 ADT: 102,900

S-42-40

Unknown

Over: I-26

5.7 MI NW SPARTANBURG, Spartanburg, SC

Built 1959 ADT: 48,500

S-42-60

Unknown

Over: I-26

4.5 MI SE INMAN, Spartanburg, SC

Built 1959 ADT: 42,900

S-42-62

Unknown

Over: I-85

2.5 MI SE DUNCAN, Spartanburg, SC

Built 1959 ADT: 102,700

S-42-242

Unknown

Over: I-85

6.0 MI SE GREER, Spartanburg, SC

Built 1959 ADT: 102,700

S-42-525

Unknown

Over: I-26

4.0 MI NW SPARTANBURG, Spartanburg, SC

Built 1959 ADT: 64,900

S-42-985

Unknown

Over: I-26

4.6MI N INMAN, Spartanburg, SC

Built 1959 ADT: 33,400

S-42-975

Unknown

Over: I-26

2.5 MI E OF INMAN, Spartanburg, SC

Built 1959 ADT: 37,400

I-26 EB

Unknown

Over: S-78 & RR NS

4.0 MI W SPARTANBURG, Spartanburg, SC

Built 1960 ADT: 2,000

I-26 EB

Unknown

Over: U.S. 29

3.9 MI W SPARTANBURG, Spartanburg, SC

Built 1960 ADT: 16,300

I-26 EB

Unknown

Over: U.S. 221

8.1 MI S SPARTANBURG, Spartanburg, SC

Built 1960 ADT: 8,400

I-26 WB

Unknown

Over: S-78 & NS RR.

4.0MI W SPARTANBURG, Spartanburg, SC

Built 1960 ADT: 2,000

I-26 WB

Unknown

Over: U.S. 221

8.1 MI SW OF SPTBG, Spartanburg, SC

Built 1960 ADT: 8,400

I-26 WB

Unknown

Over: S.C. 146

6.0 MI SE WOODRUFF, Spartanburg, SC

Built 1960 ADT: 2,200

US 176 EB

Unknown

Over: I-26

3.0 MI E OF INMAN, Spartanburg, SC

Built 1960 ADT: 18,700

US 176 WB

Unknown

Over: I-26

3.0 MI E OF INMAN, Spartanburg, SC

Built 1960 ADT: 18,700

SC 92

Unknown

Over: I-26

3.0 MI E OF ENOREE, Spartanburg, SC

Built 1960 ADT: 27,100

S-42-231

Unknown

Over: I-26

5.5 MI NE WOODRUFF, Spartanburg, SC

Built 1960 ADT: 28,300

S-42-489

Unknown

Over: I-26

5.0 MI SW SPARTANBURG, Spartanburg, SC

Built 1960 ADT: 31,700

S-42-977

Unknown

Over: I-26

2.5 MI NE OF INMAN, Spartanburg, SC

Built 1960 ADT: 37,400

S-42-86

Unknown

Over: I-26

6.0 MI SE WOODRUFF, Spartanburg, SC

Built 1961 ADT: 26,900

C-42-2014

Unknown

Over: U S 221

6.2 MI SW SPARTANBURG, Spartanburg, SC

Built 1962 ADT: 16,800

I-85 NB

Unknown

Over: I-26

5.0 MI NW OF SPARTANBURG, Spartanburg, SC

Built 1988 ADT: 23,850

S-42-65

Unknown

Over: I-85 (NEW LOCATION)

4.2 MI. NW SPARTANBURG, Spartanburg, SC

Built 1989 ADT: 89,500

S-42-839

Unknown

Over: I-85

3 MI NW OF SPARTANBURG, Spartanburg, SC

Built 1989 ADT: 89,500

I-85 NB

Unknown

Over: S-41

5.8 MI NW OF SPARTANBURG, Spartanburg, SC

Built 1990 ADT: 1,550

I-85 RAMP

Unknown

Over: I-26 & I-85

5.0 MI NW OF SPARTANBURG, Spartanburg, SC

Built 1990 ADT: 56,500

I-85 SB

Unknown

Over: S-41

5.8 MI NW OF SPARTANBURG, Spartanburg, SC

Built 1990 ADT: 1,550

S-42-968

Unknown

Over: I-26

4.5 MI NW OF SPARTANBURG, Spartanburg, SC

Built 1990 ADT: 47,700

I-85 NB

Unknown

Over: S-43

2.3 MI_N OF SPARTANBURG, Spartanburg, SC

Built 1993 ADT: 5,150

I-85 SB

Unknown

Over: SC 85 SB

6.0 MI W OF SPARTANBURG, Spartanburg, SC

Built 1993 ADT: 13,250

US 176

Unknown

Over: I-85 (NEW)

3.5 MI NW OF SPARTANBURG, Spartanburg, SC

Built 1993 ADT: 89,500

SC 9

Unknown

Over: I-85 (NEW)

4.5 MI N SPARTENBURG, Spartanburg, SC

Built 1993 ADT: 82,500

S-42-57

Unknown

Over: I-85

4.0 MI W COWPENS, Spartanburg, SC

Built 1994 ADT: 72,500

SC 85

Unknown

Over: I-85

5.0 MI E SPARTANBURG, Spartanburg, SC

Built 1995 ADT: 68,900

S-42-366

Unknown

Over: I-85

5.0 MI NW OF SPARTANBURG, Spartanburg, SC

Built 1998 ADT: 82,500

I-85

Unknown

Over: US 29

3.0 MI E OF LYMAN, Spartanburg, SC

Built 2000 ADT: 26,700

US 176 EB

Unknown

Over: EAST CAMPUS BLVD

3.7 N OF SPARTANBURG, Spartanburg, SC

Built 2006 ADT: 62

US 176 WB

Unknown

Over: EAST CAMPUS BLVD

3.7 MI N OF SPARTANBURG, Spartanburg, SC

Built 2006 ADT: 62

US 176 BRIDGE RAMP

Unknown

Over: EAST CAMPUS BLVD(S-1089)

3.6 MI N OR SPARTANBURG, Spartanburg, SC

Built 2006 ADT: 125

I-85 BRIDGE RAMP

Unknown

Over: I-85

NEAR AIRPORT ACCESS, Spartanburg, SC

Built 2006 ADT: 108,300

I-85 BRIDGE RAMP

Unknown

Over: I-85

AIRPORT ACCESS, Spartanburg, SC

Built 2006 ADT: 108,300

Showing 451-500 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 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.