For the issues extracted during the test application of the progress payment method to public construction works, we proposed a total system based on our investigation of the application of information technology for the progress payment method. The issue of increasing work amount for documentation of progress reports and inspection materials, we thought that the efficiency improvement by 4D-CAD, where product and process models are linked together, is important among the set of the sub systems. Therefore, in this paper, we investigated the model of 4D-CAD system corresponding to the progress payment method, and developed a prototype system. We applied this system to a simplified virtual tunneling work and tested the feasibility and practicality of this method.