Tremblay station is located south of Tremblay Road and directly west of the Via Rail station known as Ottawa station. The Ottawa station entrance is less than a five minute walk from the Confederation Line platforms on Level 1. While the stations are close to each other, the two buildings are not linked and transferring passengers are required to walk outside between them.[2]
Tremblay is a side platform station located at grade in a cutting. The station's single entrance building, located at the same level and opposite the railway station entrance, contains the ticket barrier and exits onto a plaza.
The station's artwork is entitled National Garden, an installation by Jyhling Lee. A series of canopies on the plaza outside the station entrance features silhouettes of flowering plants seemingly cut out of the reflective material of the canopy ceilings and folded down to produce a suspended garden. [7]