Total Bridges
5,396
Public highway bridges in South Carolina
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
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)
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
28
Mississippi
5.92% top marginal rate
45
South Carolina
6.10% top marginal rate
55
Wisconsin
6.13% top marginal rate
37
North Carolina
6.16% top marginal rate
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
PoorOver: BR OF MORRIS CR
8.4 MI SW OF WINNSBORO, Fairfield, SC
Built 1960 Load: 0.3 t ADT: 125
S-12-353
PoorOver: BEAVER DAM CREEK
3MI NW GREAT FALLS, Chester, SC
Built 1974 Load: 0.6 t ADT: 200
C-30-548
PoorOver: NORTH RABON CREEK
11.5MI NW OF LAURENS, Laurens, SC
Built 1989 Load: 0.6 t ADT: 200
S-34-64
PoorOver: PITCH POT SWAMP
4MI W MARION, Marion, SC
Built 1967 Load: 1.0 t ADT: 200
S-39-250
PoorOver: MACHINE CREEK
8.0 MI N EASLEY, Pickens, SC
Built 1963 Load: 1.0 t ADT: 2,400
C-11-288
PoorOver: BR BROAD RIVER
3.8 MI SW BLACKBURG, Cherokee, SC
Built 1992 Load: 1.3 t ADT: 200
All Bridges in South Carolina
I-526 EB
UnknownOver: US 52&S-60&RR CSXT&NS
NORTH CHARLESTON, Charleston, SC
Built 1992 ADT: 16,600
SC 61 NB
UnknownOver: US 17&RAMPSONUS17&SC700
IN CHARLESTON, Charleston, SC
Built 1995 ADT: 36,400
SC 61 SB
UnknownOver: US 17 & SC 700
IN CHARLESTON, Charleston, SC
Built 1995 ADT: 36,400
US 17 NB
UnknownOver: SC 30/S-658
IN CHARLESTON, Charleston, SC
Built 1997 ADT: 31,600
US 17 SB
UnknownOver: SC 30/S-658
CITY OF CHARLESTON, Charleston, SC
Built 1997 ADT: 31,600
US 17 NB
UnknownOver: US 52/MEETING ST
CHARLESTON CITY LIMIT, Charleston, SC
Built 2005 ADT: 9,350
RAMP OFF I-26 EB
UnknownOver: I-26&RAMPSON US 17&US 52
CHARLESTON CITY LIMITS, Charleston, SC
Built 2005 ADT: 18,700
RAMP OFF US 17 NB
UnknownOver: HARRY M HALLMAN JR BLVD
MT. PLEASANT, Charleston, SC
Built 2005 ADT: 600
RAMP ON US 17 NB
UnknownOver: US 52 BUS/MORRISON DR
CHARLESTON CITY LIMIT, Charleston, SC
Built 2005 ADT: 16,500
US 17 NB
UnknownOver: HARRY M HALLMAN JR BLVD
CHARLESTON CITY LIMITS, Charleston, SC
Built 2005 ADT: 300
RAMP OFF US 17 SB
UnknownOver: MARSH & RR CSXT
CHARLESTON CITY LIMITS, Charleston, SC
Built 2005 ADT: 16,700
US 78 EB
UnknownOver: US 52
NORTH CHARLESTON, Charleston, SC
Built 2003 ADT: 58,800
US 17
UnknownOver: S-1271/BOWMAN ROAD
CHARLESTON, Charleston, SC
Built 2014 ADT: 7,500
I-26 RAMP
UnknownOver: EB TO S-32 (SPRUILL AVE
NORTH CHARLESTON, Charleston, SC
Built 2020 ADT: 83,600
US 52 RAMP
UnknownOver: CON TO I-26 WB
IN CHARLESTON, Charleston, SC
Built 2020 ADT: 3,100
RAMP OFF I-26 WB
UnknownOver: US 78 & RR CSXT
NORTH CHARLESTON, Charleston, SC
Built 2020 ADT: 8,600
RAMP ON I-26 EB
UnknownOver: I-26&US 78 & RR CSXT
NORTH CHARLESTON, Charleston, SC
Built 2020 ADT: 83,600
S-11-82
UnknownOver: I-85
2.5MI NE GAFFNEY, Cherokee, SC
Built 1958 ADT: 62,400
US 29
UnknownOver: I-85
5 MI N OF BLACKSBURG, Cherokee, SC
Built 2021 ADT: 49,800
SC 198
UnknownOver: I-85
1 MI N OF BLACKSBURG, Cherokee, SC
Built 1940 ADT: 55,200
I-77 NB
UnknownOver: S-12-56
0.5 MI W OF RICHBURG, Chester, SC
Built 1978 ADT: 600
SC 9 NB
UnknownOver: I-77
10.6MI NE OF CHESTER, Chester, SC
Built 1978 ADT: 24,100
SC 901
UnknownOver: I-77
1.0 M N FAIRFIELD CO, Chester, SC
Built 1979 ADT: 47,500
S-12-52
UnknownOver: I-77
6.0 MI S RICHBURG, Chester, SC
Built 1979 ADT: 47,800
S-12-497
UnknownOver: I-77
1.5 MI S RICHBURG, Chester, SC
Built 1979 ADT: 47,800
I-95 NB
UnknownOver: S-25 & S-38
1MI SE OF SUMMERTON, Clarendon, SC
Built 1967 ADT: 500
I-95 NB
UnknownOver: U.S. 301
5MI S OF MANNING, Clarendon, SC
Built 1967 ADT: 2,250
I-95 SB
UnknownOver: U.S. 301
5MI S OF MANNING, Clarendon, SC
Built 1967 ADT: 2,250
S-14-50
UnknownOver: I-95
9MI N MANNING, Clarendon, SC
Built 1967 ADT: 33,800
S-14-52
UnknownOver: I-95
6MI N MANNING, Clarendon, SC
Built 1967 ADT: 33,800
I-95 NB
UnknownOver: US 15
7MI SW OF SUMMERTON, Clarendon, SC
Built 1968 ADT: 500
S-14-23
UnknownOver: I-95
3MI NW MANNING, Clarendon, SC
Built 1968 ADT: 37,200
S-14-79
UnknownOver: I-95
3MI W MANNING, Clarendon, SC
Built 1968 ADT: 36,700
S-14-420
UnknownOver: I-95
6MI SW MANNING, Clarendon, SC
Built 1968 ADT: 36,000
US 21
UnknownOver: I-95
14.2 MI SW WALTERBORO, Colleton, SC
Built 1968 ADT: 52,100
SC 63/SNIDER HWY
UnknownOver: I-95
2.5MI W WALTERBORO, Colleton, SC
Built 1970 ADT: 51,500
S-15-28
UnknownOver: I-95
8.5 MI SW WALT'B, Colleton, SC
Built 1970 ADT: 51,500
S-15-66
UnknownOver: I-95
10.8 MI SW WALTERBORO, Colleton, SC
Built 1970 ADT: 51,500
S-15-522
UnknownOver: I-95
6 MI SW WALTERBORO, Colleton, SC
Built 1970 ADT: 51,500
S-15-24
UnknownOver: I-95
3 MI NW WALT'B, Colleton, SC
Built 1973 ADT: 51,400
S-15-51/BEACH RD
UnknownOver: I-95
2.5 MI W WALT'B, Colleton, SC
Built 1973 ADT: 50,600
I-95 NB
UnknownOver: L-339 & SCL RR
9.0 MI N OF WALTBR, Colleton, SC
Built 1974 ADT: 100
I-95 SB
UnknownOver: L-339 & SCL RR
9.0 MI N OF WALTBR, Colleton, SC
Built 1974 ADT: 100
SC 61/AUGUSTA HWY
UnknownOver: I-95
2 MI W OF CANADYS, Colleton, SC
Built 1974 ADT: 51,200
S-16-179
UnknownOver: I-95
5MI N FLORENCE, Darlington, SC
Built 1967 ADT: 56,300
SC 34
UnknownOver: US 52 BY PASS
IN DARLINGTON, Darlington, SC
Built 1972 ADT: 22,800
I-20 EB
UnknownOver: SC 340
7MI S OF DARLINGTON, Darlington, SC
Built 1973 ADT: 1,000
S-16-32
UnknownOver: I-20
3MI NW LAMAR, Darlington, SC
Built 1973 ADT: 28,700
US 401
UnknownOver: I-20
3MI N OF LAMAR, Darlington, SC
Built 1974 ADT: 28,700
SC 403
UnknownOver: I-20
2MI NE OF LAMAR, Darlington, SC
Built 1974 ADT: 28,700
Showing 101-150 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.
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |