In 2024, Arizona used foam made from 100% recycled glass at 19 sites while widening 23 miles of I-17; the lightweight fill helped culverts built for two lanes support added lanes
I-17 Improvement Project using foam glass aggregate as a new innovative construction material Engineers in Arizona have used an unusual material to expand a major interstate: tens of thousands of tonnes of crushed recycled glass. During the expansion of Interstate 17 north of Phoenix, construction crews used ultra-lightweight foam glass aggregate at 19 locations along…