Minister Chris Bishop and Mayor Wayne Brown announced the opening date at Karanga-a-hape station this morning. (Image: Sylvie Whinray)Auckland’s $5.5.billion City Rail Link project is “a symbol of the city’s ambition”, Infrastructure Minister Chris Bishop says.At an official launch at the new Karanga-a-Hape Station this morning, he and Auckland Mayor Wayne Brown announced the long-awaited project would finally open on Sunday, Sept 13.Billboards around the city jumped the gun, announcing the opening date from early this morning. 'Good infrastructure'The City Rail Link (CRL) was not simply another piece of infrastructure, Bishop said.