This research presents an analysis of the results obtained from modified asphalt with lignin, an abundant polymer and of easy access due to its natural origin and its low cost of obtaining, which is created by the process of photosynthesis. Composes 30% of non-fossil organic carbon and one-fourth to one-third of the dry mass of the wood, and also fulfills a fundamental function characterized by structural support, impermeability and resistance to microbiological agents and oxidative stress. This makes it a very resistant polymer to degradation. For the modified blend an asphalt 80-100 was used, and lignin was produced from an industrial paper waste. The method utilized for this research was based on the tests of penetration and softening point (ring and ball), considered as basic tests when it is sought to produce mixtures that have a higher softening temperature and a lower fracture temperature. With lignin 6 different percentages were used: 5%, 10%, 15% and 20% in 400 grams of 80-100 asphalt. The lignin was sieved in the 75 µm sieve to obtain a homogeneous mixture and avoid lumps; The mixing time was 30 minutes for each percentage and the temperature was handled in a range of 125 ° C to 135 ° C to prevent the appearance of air bubbles.