Planning and project management in civil engineering is a challenging task, because it is essential to closely predict all the required work, cost and time in advance. Quality process planning and the evaluation of future costs are proportional to profitably complete a set project in time. This graduation thesis analyzes the deviation of costs and time during the reconstruction of the bridge together with the arrangement of the regional road and the riverbed. Two comparisons were made; one between the contract pre-assessment of costs and the actual cost to the contractor, and one between the contract schedule and the actual progress of the work. The construction progress of the facility was described in detail, as well as the distribution of labor and construction machinery at the construction site. Changes in the project which contributed to unexpected costs and additional lag time during construction were also specifically described in the graduation thesis.