The level of street-network sprawl in new development in South Carolina rose steadily. To get a sense of how street development has changed in South Carolina, we can consider one of its most populous cities: Columbia. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Columbia peaked in 1976-1990.

How do development practices in South Carolina fare in comparison to others in United States? Most recently in 2006-2020, street construction in South Carolina was the 43rd-most disconnected out of the 44 regions in United States. Its position in the ranks since 1975 has fallen; relative to other regions in United States, street construction in South Carolina has become more connected. South Carolina ranked 39th in 1975, 37th in 1976-1990, 43rd in 1991-2005 and 43rd in 2006-2020.

As of 2020, the city with the most disconnected street network in South Carolina is Columbia with an SNDi of 2.35, which is well-connected. Conversely, the most connected city is Columbia with an SNDi of 2.35, which is well-connected. See trends for these cities: Columbia, Columbia

The level of street-network sprawl in the aggregate network in South Carolina rose steadily. To get a sense of how the aggregate street network has changed in South Carolina, we can consider one of its most populous cities: Columbia. Disconnectivity in the most populous cities in South Carolina follow the same region trend.

To date, South Carolina is the 41st-most disconnected out of the 44 regions in United States. Its position in the ranks since 1975 has fallen; relative to other regions in United States, the street network in South Carolina has become more connected. South Carolina ranked 39th in 1975, 40th in 1976-1990, 40th in 1991-2005 and 41st in 2006-2020.