CHARLESTON, SC (WCSC) - Flooding is nothing new on the peninsula in downtown Charleston, but after Sunday's rain, some streets were left with cracks and buckling. One lane of Calhoun is still blocked off between East Bay and Alexander Streets.
Mike Metzler, head of sidewalk and storm drain maintenance for the city, said asphalt and concrete are no match for Mother Nature.
"Water is an erosive force and a powerful force so it can erode the dirt out from underneath," said Metzler.
The buckling on Calhoun Street was likely caused by water and air pressure building up, then blowing off a 2,000-pound concrete block, and when the air tried to escape, it buckled the asphalt as it was escaping. Metzler said this wasn't the first time this same thing has happened at the same spot.
"It occurred one other time 9 months ago and that's when we installed the additional vent if you will, manhole that's vented," said Metzler, bringing the number of vented manholes in that area to three.
Engineers will check out the damage in the next few days to figure out what they need to do to fix the problem. Until it's fixed, that portion of road will stay blocked off by barricades.