State Highway System

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South Carolina is responsible for one of the largest state-owned transportation networks in the nation. There are over 41,000 miles of roadways and 8,442 bridges that make up our state system.

This extensive network connects South Carolinians to all aspects of their everyday lives – including education, employment, social services, healthcare, consumer services, and retailers. Our roads and bridges also serve South Carolina's manufacturing, agricultural, and commercial industries, which utilize the transportation network for commerce and need to move freight in a timely and efficient manner.

41,000+

Miles of Roadways

One of the largest state-owned networks in the nation.

8,442

Bridges

A growing number of bridges have reached the age where repairs or replacements are necessary.

62B+

Miles Traveled Annually

Drivers travel 62 billion miles annually on South Carolina's roadways.

Traffic Distribution

The majority of traffic occurs on a quarter of our state system, specifically on interstates and primary routes.
In contrast, HALF of the state system carries only 6% of traffic.

In order to repair, maintain, and improve this extensive network, South Carolina depends on federal dollars and state revenues derived from fuel taxes and other driver/vehicle related fees.

Learn More About Transportation Infrastructure

Explore more educational resources about South Carolina's transportation system

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