State Overview · 2025 Data
South Carolina Bridge Conditions
South Carolina has 9.5K bridges in the FHWA National Bridge Inventory. 1.7K (17.7%) are structurally deficient. Average bridge age is 49 years with an average Condition Score of 61/100.
9.5K
Total Bridges
17.7%
Deficient
49 yrs
Avg Age
61
Avg Score
Worst Condition Bridges in South Carolina
I-26F
Score 0/100 · Built 1960 · 143K daily
I-77F
Score 0/100 · Built 1973 · 131K daily
I-26C
Score 57/100 · Built 1964 · 170K daily
I-26/RAMP OFF I-26B
Score 61/100 · Built 1958 · 131K daily
I-20B
Score 61/100 · Built 1965 · 124K daily
I-26B
Score 64/100 · Built 1964 · 143K daily
I-20B
Score 64/100 · Built 1964 · 124K daily
I-77B
Score 65/100 · Built 1973 · 126K daily
I-85B
Score 66/100 · Built 1960 · 141K daily
I-77B
Score 69/100 · Built 1973 · 131K daily
I-77B
Score 69/100 · Built 1973 · 125K daily
I-20B
Score 69/100 · Built 1965 · 124K daily
I-85A
Score 100/100 · Built 2022 · 141K daily
Highest Traffic Bridges in South Carolina
I-26C
170K daily · Score 57/100 · Built 1964
I-26F
143K daily · Score 0/100 · Built 1960
I-26B
143K daily · Score 64/100 · Built 1964
I-85B
141K daily · Score 66/100 · Built 1960
I-85A
141K daily · Score 100/100 · Built 2022
I-77F
131K daily · Score 0/100 · Built 1973
I-77B
131K daily · Score 69/100 · Built 1973
I-26/RAMP OFF I-26B
131K daily · Score 61/100 · Built 1958
I-77B
126K daily · Score 65/100 · Built 1973
I-77B
125K daily · Score 69/100 · Built 1973
I-20B
124K daily · Score 64/100 · Built 1964
I-20B
124K daily · Score 61/100 · Built 1965
I-20B
124K daily · Score 69/100 · Built 1965