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The construction site is located west of Bunker Hill, southeast of the Mass Chemical building. The location can be divided into three points of interest: a small garage to the west, the unfinished building, and the warehouse to the north.
This building consists of nine floors and a basement. There are three finished floors with a few rooms and several unfinished levels. The very top of these levels has a platform that connects to the nearby broken section of the freeway.
A machine gun turret is located just inside the main entrance. A weapons workbench is located on the fourth floor. A steamer trunk is located on the eighth floor. Dropping down the elevator shaft lands you in the partially flooded basement containing a steamer trunk.
On the broken section of the overpass accessed near the top is a toppled trailer to the north with a locked trailer door (Master lock). This contains a Vault 81 steamer trunk with minor loot located at the front. To the south end is a construction lift which ascends to the top tier of the overpass and another lift further south (though there is nothing of value there). It is possible to jump to the next section of the road and continue past this lift and arrive above the garden terrace. At the ending path it is possible to descend some stairs and continue over a walkway to a door into the Commonwealth Bank.
Construction site warehouseEdit
North of the construction site is the warehouse. It has two doors, one leading to the construction site, the other to Charlestown. It houses a forklift mounted on caterpillar tracks. A sleeping bag can be accessed on the catwalk. A super mutant is usually guarding the building.
The Cambridge construction site only appears in Fallout 4.