Engineering design consultants appointed for Brenner Base Tunnel project, Austria and Italy June 8, 2024 | Company News, Europe Company News, Europe News, News BBT SE has appointed the ISIE consortium as consultants to provide engineering design services for the construction of the 64-km-long Brenner Base Tunnel (BBT) between Italy and Austria. The ISIE cons... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password