This aggregate base on the subgrade provides a sturdy foundation for the asphalt layers. If the road builders do not use the right materials, or do not put them together correctly, or do not ...

Base materials vary by region and can be crushed stone or “conbit” (recycled concrete and asphalt—it’s crushed and reused). Crushed coarse materials like these have jagged surfaces ...

Work is scheduled to begin Tuesday (April 22, 2025) on the exit and entrance ramps at exit 214 on Interstate 90 east of ...