The essence of the graduation thesis is the analysis of asphalt works as the main works of the reconstruction of the part of the Ljubljana bypass between the Celovška and Koseze exits executed in 2012. Our analysis was done from the perspective of time needed for the execution and from the perspective of costs. We compared the tender estimates with the execution data in the analysis. Data needed for our analysis was obtained from the contractor of the analyzed asphalt works, company STRABAG Ltd Slovenia. We used the same IT tools for our analysis that the contractor uses in everyday work. The findings of our analysis were used in the conclusion to propose improvements in the preparation of future tender offers and project execution monitoring by the contractor as well as changes in some of the employer, DARS’s, future tender requirements.