Abstract: A sound barrier wall has a plurality of footings spaced apart and vertical “I” beam wall stiffeners mounted to the footings. Alternatively, the vertical wall stiffeners are mounted to a crash barrier. A horizontal wall stiffener can be disposed between the adjacent vertical wall stiffeners. A plurality of wall panels is vertically stacked between adjacent vertical wall stiffeners. Each wall panel includes a sound insulating block, and plurality of support members disposed on opposite sides of the sound insulating block for providing structural support. Each support member has a head portion in contact with a surface of the sound insulating block and a stem portion extending into the sound insulating block. An “I” beam can be disposed between the vertically stacked wall panels. A top cap is mounted over the vertically stacked wall panels and protective layer is formed over the wall panels and vertical wall stiffeners.

Abstract: A sound barrier wall has a plurality of footings spaced apart and vertical “I” beam wall stiffeners mounted to the footings. Alternatively, the vertical wall stiffeners are mounted to a crash barrier. A horizontal wall stiffener can be disposed between the adjacent vertical wall stiffeners. A plurality of wall panels is vertically stacked between adjacent vertical wall stiffeners. Each wall panel includes a sound insulating block, and plurality of support members disposed on opposite sides of the sound insulating block for providing structural support. Each support member has a head portion in contact with a surface of the sound insulating block and a stem portion extending into the sound insulating block. An “I” beam can be disposed between the vertically stacked wall panels. A top cap is mounted over the vertically stacked wall panels and protective layer is formed over the wall panels and vertical wall stiffeners.