The Sgarbossa criteria for modified bitumen assess the compatibility and performance of polymer-modified asphalt. By ensuring optimal polymer interaction, these criteria enhance the mechanical properties, such as elasticity and resistance to deformation. This leads to improved durability, reduced cracking, and better performance under varying temperatures. Consequently, modified asphalt applications benefit from enhanced longevity and resilience, making them suitable for high-stress environments like highways and airfields. Overall, adherence to Sgarbossa criteria ensures superior performance in modified bitumen applications.