[Updated December 3, 2011 4:45 PM]
To allow Harvard University Skanska construction crews to assemble a ginormous red crane on the renovation construction site of the former Fogg Museum, some streets in the area were closed between Thursday November 17 and Monday November 21, 2011.
After assembling the white support crane the Skanska construction crew began raising the main ten story red crane on the Harvard University Fogg Museum construction site. Prescott Street between Harvard Street and Broadway remained closed.
Day two of assembling the main construction crane on the Fogg Museum renovation site, at Harvard University, Cambridge MA.
On the third day of the assembly of the main construction crane, three courageous Skanska employees walked out along the horizontal segment of the crane to attach cables and to untie guidelines. After assembling the main crane the support crane was taken down and away. Broadway was closed for the entire day as well as Prescott Street all two blocks of it.
[Still images of this operation can be seen at these links.]