• Value Engineering replacement of Geofoam and Expanded

Shale as lightweight fill

• UL-FGA offered Contractor and DOT cost and time savings

• Compacted UL-FGA thickness varies between 1 and 9 feet,


• FGA under roadway is topped with 14 inch DGA Subbase

and flexible pavement section

• Pavement has been monitored via survey since installation

and shows no movement

• Subbase placed, compaction of subbase above UL-FGA

achieved with no issues

• Paved, trafficked, monitored