The state Department of Transportation says no structural damage has been found in bridges in the area of Friday night's magnitude 4.1 earthquake that was centered about 7 miles west of Edgefield.
Officials also say no damage was found to nuclear power plants in South Carolina.
And no damage was apparent to dams on Thurmond Lake and Russell Lake.
The Valentine's Day earthquake was felt throughout the Southeast.
Dr. Steven Jaume with South Carolina Earthquake Education and Preparedness at the College of Charleston says the quake is the largest in South Carolina since a magnitude 4.4 earthquake offshore of Edisto Island in 2002.
Jaume says Friday's night's quake occurred in a part of South Carolina that has a geologic history similar to that of Louisa County, Virginia, the location of the magnitude 5.8 earthquake in 2011 that damaged buildings in Washington, D.C., including the Washington Monument.
He says the faulting mechanism of Friday’s earthquake is also similar to the 2011 Virginia earthquake.