Oshkosh has approved a ~$500,000 concrete rehabilitation project for Witzel Avenue, targeting patchwork repairs along the corridor. The project has no set start date, but the city said it will post signage in advance to give drivers notice before construction begins.For daily commuters, the road's condition has long been a frustration.WATCH THE FULL BROADCAST HERE: Oshkosh approves $500K Witzel Avenue repaving project"It's a pretty bumpy road, b…