The collision occurred at the intersection of Sidney and South 28 streets, public safety officials said. Water main break shuts down East CarsonA large water main break closed inbound lanes Wednesday morning on East Carson Street in Pittsburgh’s South Side. Pittsburgh Water said contractors are repairing a water main near the Birmingham Bridge at the intersection of East Carson and South 22nd streets. Pittsburgh public safety officials asked drivers to avoid the area and warned that additional closures are expected. Public safety officials said they were looking for a silver 2011 Hyundai Elantra.