KeyGrid™ – KeySystem™ II STRUCTURAL RETAINING WALL BLOCK
Keystone’s KeyGrid System has been developed, designed and tested to meet the highest standards of the transportation market. This system was evaluated by HITEC and found to be in accordance with the most current AASHTO LRFD Bridge Design Specifications and Federal Highway Administration design requirements for transportation applications. KeyGrid utilizes the patented Keystone Compac II unit and Miragrid® XT geogrids. KeyGrid is known as KeySystem II in some markets.