he most recent information we have from MassDOT is that the completion of the project has been delayed until 2018. Contractors are currently working on the new bridge 24 hours a day. The next major situation will be when traffic patterns are altered to accommodate the connection of the bridge to the approach ramps. This means there will be one lane in each direction instead of the current two lanes. Alternate routes and additional public transportation for commuters is being studied. This is scheduled to happen in April 2017 and last four to five months.
You will find more information at MassDOT’s dedicated page.