Obviously as the Pike is Locked to 5, there are a mere few (harling?) who may be able to add restrictions for this construction.
Weekends of 9PM Fridays to 5AM Mondays March 21-23, March 28-30, April 4-6, April 25-27 there are scheduled ramp closures from/to I-90 in the Prudential Tunnel.
"Due to the reduced number of travel lanes for both directions of I-90, most of the on- and off-ramps
between the Alston/Brighton Tolls and I-93 in Boston will be closed for the duration of the weekend.
Motorists should expect significant delays and congestion as a result of this necessary work on the
ceiling of the Prudential Tunnel. "
Full details at http://prutunnelproject.info/img/Project%20Documents/PruTunnel_I-90_Fact_Sheet_Final.pdf
There will apparantly be a “dry run” this weekend (http://www.boston.com/news/local/massachusetts/2014/03/06/traffic-restrictions-pike-downtown-this-weekend-will-just-preview/ZmXeUw5ck5ULQ0i4OXik2N/story.html) though the details are a bit vague.