The Treacherous Road

The Treacherous Road is a main quest in the Fallout: New Vegas add-on, Honest Hearts.

Quick walkthrough

 * 1) Travel to the old Rockville bridge and:
 * 2) Disarm the traps on the old Rockville bridge, or
 * 3) Kill the White Legs planting the traps.

Detailed walkthrough
The easiest way to finish this quest is to disarm the traps, since there are only six traps on the bridge, and not very many enemies are guarding them.

If you choose to kill the White Legs sappers, the quest will be somewhat harder because they travel in groups. Two of the White Legs are in a large group to the north, and one is in a smaller group to the south.

Whichever path you choose, you can still go back and disarm the traps or kill the White Legs (whichever you didn't choose) after the quest is completed for extra XP.