A structural assembly of a vehicle includes a pair of hinge pillars, a pair of channel members and a pair of rails. Each channel member of the pair of channel members includes a vertical wall, a top wall, and a bottom wall. The vertical wall is secured to a respective hinge pillar of the pair of hinge pillars and the bottom wall is spaced apart from and below the top wall to define a cavity therebetween. A longitudinal portion of each rail of the pair of rails is secured to a respective channel member of the pair of channel members and at least partially received in the cavity. The longitudinal portion of the rail extends along a longitudinal direction of the vehicle above a respective wheel well of the vehicle.