During the Fall of Reach, many Covenant forces began assaulting UNSC units and civilians that were on the Concourse. Noble Six entered the city near the tram station, en route to linking up with the UNSC forces. The SPARTAN navigated their way to the Traxus Tower, assisting with the Evacuation of New Alexandria.
The concourse is connected with various pathways that lead to different sections. Each area is identified in a color. Each sub-area is identified in its own color. The area is adorned with a either a small version of the New Alexandria logo in its specific color or a large rectangle version of the logo with a number. There also appears to be a series of numbers on the signs which indicate the sub-areas.
- Area 0: Green
- Area 1: Orange
- Area 2: Blue
- Area 3: Red
- Area 4: Pink
- Area 5: Teal
- Corporate Park (05N 447): This area comprises the Traxus Tower and the Cargo Port.
- The multiplayer level Boardwalk takes place in this concourse.
- The beginning of the campaign level Exodus takes place in the New Alexandria Concourse.