• 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, approximately
• 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