Boston's Sumner Tunnel closed at midnight and MassDOT highway administratior Jonathan Gulliver said demolition is already underway as this overhaul of the 88yearold tunnel begins.
Subscribe to WCVB on YouTube now for more: http://bit.ly/1e8lAMZ
Get more Boston news: http://www.wcvb.com
Like us: / wcvb5
Follow us: / wcvb
Instagram: / wcvb5