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
US 278 EB
UnknownOver: SC 170
18.5 MI SW OF BEAUFORT, Beaufort, SC
Built 1991 ADT: 12,700
US 278 WB
UnknownOver: SC 170
18.5 MI SW OF BEAUFORT, Beaufort, SC
Built 1991 ADT: 12,700
US 278 WB
UnknownOver: US 278 BUS EB
HILTON HEAD ISLAND, Beaufort, SC
Built 1997 ADT: 19,650
US 17
UnknownOver: US 21
8 MI N OF BEAUFORT, Beaufort, SC
Built 2009 ADT: 15,400
S-7-1715/JASPER BD
UnknownOver: US 278
OKATIE, Beaufort, SC
Built 1999 ADT: 34,000
S-8-32
UnknownOver: I-26
14 MI SW MONCKS CORNER, Berkeley, SC
Built 1961 ADT: 53,500
S-8-62
UnknownOver: I-26
AT LADSON, Berkeley, SC
Built 1961 ADT: 90,400
RAMP OFF I-26 EB
UnknownOver: RAMP ON I-26 EB
10 MI W OF GOOSE CREEK, Berkeley, SC
Built 2019 ADT: 53,500
S-8-16
UnknownOver: I-26
13 MI W SW OF MONCKS CRN, Berkeley, SC
Built 2022 ADT: 53,500
S-9-16
UnknownOver: I-26
6 MI W ST MATHEWS, Calhoun, SC
Built 1959 ADT: 55,200
SC 6
UnknownOver: I-26
9MI W OF ST MATTHEWS, Calhoun, SC
Built 1960 ADT: 55,500
S-9-30
UnknownOver: I-26
8 MI NW ST MATHEWS, Calhoun, SC
Built 1960 ADT: 55,500
S-9-35
UnknownOver: I-26
8 MI NW ST MATHEWS, Calhoun, SC
Built 1960 ADT: 55,500
US 52/RIVERS AVE
UnknownOver: RR CSXT @ S-10-39
IN N CHARLESTON, Charleston, SC
Built 1936 ADT: 600
SC 7/COSGROVE AVE
UnknownOver: S-39 & S-163 & RR CSXT
NORTH CHARLESTON, Charleston, SC
Built 2016 ADT: 3,800
US 78
UnknownOver: I-26
7 MI N OF N CHAS, Charleston, SC
Built 2003 ADT: 107,700
US 52 CON WB
UnknownOver: US 52 EB
3 MI N NORTH CHARLESTON, Charleston, SC
Built 1963 ADT: 42,600
RAMP ON I-26 EB
UnknownOver: I-26
3 MI N CHARLESTON, Charleston, SC
Built 2004 ADT: 113,300
S-10-62
UnknownOver: US 52
N CHAS, Charleston, SC
Built 1963 ADT: 33,200
S-10-62
UnknownOver: I-26
N CHAS, Charleston, SC
Built 1963 ADT: 91,600
I-26
UnknownOver: S-1600 & RR NS
0.5 MI W N CHARLESTON, Charleston, SC
Built 1964 ADT: 375
I-26
UnknownOver: S.C 7/COSGROVE AVE
IN N CHARLESTON, Charleston, SC
Built 1964 ADT: 46,800
I-26
UnknownOver: S-222/BAKER HOSPITAL
IN N CHARLESTON, Charleston, SC
Built 1964 ADT: 2,000
I-26
UnknownOver: MIDLAND PARK RD.-S-1187
1 MI W N CHARLESTON, Charleston, SC
Built 1964 ADT: 5,650
RAMP OFF I-26 EB
UnknownOver: MONTFORD AVE
IN CHARLESTON, Charleston, SC
Built 1968 ADT: 2,300
RAMP ON I-26 WB
UnknownOver: MONTFORD AVE
IN CHARLESTON, Charleston, SC
Built 1968 ADT: 2,300
RAMP OFF I-26 EB
UnknownOver: US 78/KING STREET
IN CHARLESTON, Charleston, SC
Built 1969 ADT: 5,550
RAMP ON I-26 WB
UnknownOver: RAMP OFF I-26 EB & US 78
IN CHARLESTON, Charleston, SC
Built 1969 ADT: 9,350
RAMP ON US 17 NB
UnknownOver: JOHNSON ST & RR CSXT
IN CHARLESTON, Charleston, SC
Built 2005 ADT: 75
S-10-20/MAIN RD
UnknownOver: RR CSXT & L-1376 &S-1377
9.8 MI W CHARLESTON, Charleston, SC
Built 1980 ADT: 300
I-526 WB
UnknownOver: L-4436/WAKENDAW RD
NEAR MT PLEASANT, Charleston, SC
Built 1991 ADT: 112
I-526WB/RAMPON526
UnknownOver: S-56/MATHIS FERRY RD
NEAR MT. PLEASANT, Charleston, SC
Built 1990 ADT: 7,150
I-526 EB
UnknownOver: S-1168/SAVAGE RD
5.5 MI NW CHARLESTON, Charleston, SC
Built 1982 ADT: 4,300
I-526 EB
UnknownOver: SC 461/PAULCANTRELL BLVD
5.8 MI NW CHARLESTON, Charleston, SC
Built 1982 ADT: 22,650
I-526 WB
UnknownOver: S-1168/SAVAGE RD
5.5 MI NW CHARLESTON, Charleston, SC
Built 1982 ADT: 4,300
I-526 EB
UnknownOver: SC 61
5.9 MI NW CHARLESTON, Charleston, SC
Built 1983 ADT: 10,750
I-526 WB
UnknownOver: SC 61
5.9 MI NW CHARLESTON, Charleston, SC
Built 1983 ADT: 10,750
I-526 EB
UnknownOver: SC 642
IN N CHARLESTON, Charleston, SC
Built 1986 ADT: 10,700
I-526 EB
UnknownOver: AIRPORT ACCESS__L-4486
IN N CHARLESTON, Charleston, SC
Built 1986 ADT: 12,650
RAMP ON I-26 WB
UnknownOver: S-1600/LACROSS RD
IN N. CHARLESTON, Charleston, SC
Built 1989 ADT: 750
I-526 EB
UnknownOver: I-26 & S-1600 & RR
IN N. CHARLESTON, Charleston, SC
Built 1990 ADT: 82,450
RAMP ON I-26 WB
UnknownOver: I-26
NORTH CHARLESTON, Charleston, SC
Built 1990 ADT: 91,600
I-526 EB
UnknownOver: S-97/LONG POINT ROAD
NEAR MT. PLEASANT, Charleston, SC
Built 1990 ADT: 16,750
I-562 WB
UnknownOver: I-26
IN N. CHARLESTON, Charleston, SC
Built 1990 ADT: 82,450
RAMP ON I-526 WB
UnknownOver: VEGETATIVE RIGHT OF WAY
IN N. CHARLESTON, Charleston, SC
Built 1990 ADT: 750
I-526 WB
UnknownOver: S-97/LONG POINT ROAD
NEAR MT. PLEASANT, Charleston, SC
Built 1990 ADT: 16,750
I-526 EB
UnknownOver: L-4436/WAKENDAW RD
NEAR MT. PLEASANT, Charleston, SC
Built 1981 ADT: 112
RAMP OFF I-526 EB
UnknownOver: I-526 & S-56
NEAR MOUNT PLEASANT, Charleston, SC
Built 1991 ADT: 39,400
I-526 EB
UnknownOver: US 17
IN MT. PLEASANT, Charleston, SC
Built 1991 ADT: 20,850
I-526 WB
UnknownOver: US 17
IN MT. PLEASANT, Charleston, SC
Built 1991 ADT: 20,850
Showing 51-100 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 |