Abstract: A prefabricated retaining wall structure and method of installing. The structure has a precast concrete face panel and an elongated support column permanently joined to the face panel. The face panel has a top and bottom, opposing end edges and first and second sides with a thickness therebetween. The elongated support column is secured to the face panel between the opposing end edges. The column has first and second ends and an elongated body therebetween and extends along a portion of the first side of the face panel.

Abstract: A retaining wall comprises a precast concrete face panel with integral counterfort connected to the rear of the facing and a precast concrete base supporting the facing and the counterfort. The counterfort comprises a reinforced concrete slab having a substantially vertical front portion at a substantially right angle to a base portion, and a rear portion running from substantially the top of the counterfort to the rear of the base portion thereof. The face and counterfort module is connected to the base module through the use of rebar and openings which are fixedly attached together using a high strength group.