This article presents some results obtained with an MDC-2 asphalt/polystyrene-modified asphalt mixture as a result of crushing waste glass. The stone, asphalt and polystyrene materials’ were characterised for drawing up the design. The Marshal method was used for obtaining the best asphalt-stone-polystyrene percentages. The Superpave method was used for analysing the asphalt; the mixture’s dynamic behavior was analysed using a test involving 20°C and 30°C trapezoidal fatigue for 90x10-6, 150x10-6 and 220x10-6m deformation. The truck-wheel test was analysed for a 13-ton load, similar to that of the heaviest axle on a Transmilenio (articulated) bus. The dynamic module test was analysed for 15°C, 20°C and 30°C and 2.5, 5 and 10 Hz frequencies. Conventional asphalt mixture and modified asphalt results were contrasted, interesting behavior being observed regarding plastic deformation of the modified mixture in service.