Overpass is the Counter-Strike map known for its distinctive B-site area called Construction. The map is set in a Berlin park and features an overpass, underground tunnels, a canal, and the construction area surrounding Bombsite B.
Valve introduced Overpass to Counter-Strike: Global Offensive in 2013. Unlike many older maps that were adapted from earlier Counter-Strike versions, Overpass was created specifically for Global Offensive. Its vertical layers and connected underground routes give it a different structure from flatter classics such as Dust II or Mirage.
“Construction” is a recognizable callout near the B site, but callout names can vary slightly between teams and regions. That does not change the map’s identity: Overpass is the official map name, while Construction describes an important area used by players when communicating positions and rotations.