This area is accessed from an underwater pipe due south of Ticonderoga, which leads into a small flooded underground room. There is a terminal-locked security gate in the northeast corner, leading to a small area containing a steamer trunk with leveled loot.
- 4n1m4L's test logs - On the Robotics terminal in the maintenance area, during the quest The Nuclear Option (Minutemen).
- Three cryogenic grenades, the only three fixed ones in the game.
The public works maintenance area has no local map for the area past the grate needing to be opened with a keypad during The Nuclear Option (Minutemen route).
The Institute public works maintenance area appears in Fallout 4.