South Carolina’s infrastructure is making gradual progress, but aging systems continue to strain under rapid population growth, according to a report released by the South Carolina Section of the American Society of Civil Engineers (ASCE).
The state earned an overall grade of C-, a slight improvement from the D+ mark issued in 2021. The report card evaluated eight key infrastructure categories: aviation, bridges, dams, drinking water, ports, roads, transit, and wastewater.
Despite the modest upgrade, civil engineers pointed to critical areas requiring urgent attention. Aging drinking-water systems remain a top concern, with several communities still relying on pipes and facilities built in the early 1900s.
Transportation networks are similarly burdened. Approximately 43% of South Carolina’s major roads remain in poor condition. Meanwhile, only 34.5% of the state’s bridges are rated in good condition, with nearly 3,000 structures exceeding 60 years of age—pushing many past their original design life.
The report highlights a growing gap between capacity and demand as new residents flock to the state, placing additional pressure on roads and water utilities. While increased funding from a higher state gas tax has helped stem declines since 2021, decades of historic underinvestment leave substantial funding deficits to overcome.
Engineers emphasize that continued, strategic investment will be essential to meet the needs of South Carolina’s growing population before the next report card is issued in 2030.
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