The utility tunnel is an area in Fallout 3 which connects a manhole in Pennsylvania Avenue with the remains of the White House. In the add-on Broken Steel, it also contains an access to the Presidential sub level which leads to the Presidential metro with exits to the Capitol building's east wing and Adams Air Force Base.
When you first enter the utility tunnel, there is a workbench and an ophthalmoscope in a side room to the right. To get to the White House, take the first left, follow the corridor, and you will eventually find a door to the left that opens onto the ruin-filled radioactive pit that the White House has become. To reach the sub level in Broken Steel, keep following that corridor until you see a door on the right.
- Pugilism Illustrated in the first room on the right after you enter the tunnel from the White House Plaza.
- Bottlecap mine in the room to the right of the Pennsylvania Avenue exit.
There are two ramps set up on either side of a car and the remains of a daredevil who was trying to keep himself entertained after the bombs fell. You can see on one side the crashed motorcycle and the top half of the daredevil hanging from the light fixture above the car. However, it is possible for the skeleton to have fallen down and be lying on the car instead.
The utility appears only in Fallout 3.