With Fiends a constant problem, the Westside Militia has created an impressive, two-tier approach to defending the gate that leads to Westside [Zone 2A]. The Militia are suspicious, but not violent if you haven’t interacted with them before. Note the small garden (with plants ripe for picking) and a second, southern entrance [2.03].”— Fallout: New Vegas Official Game Guide/Tour of the Mojave Wasteland
The western entrance to Westside is directly to the east of The Thorn. A makeshift fence has been fashioned out of wooden fence posts, concrete barriers and scrap sheet metal to deter enemies. Members of the Westside Militia regularly patrol this area as an extra countermeasure.
The Westside West Entrance appears in Fallout: New Vegas.