The Inner City Bypass is a new transport route across Brisbane. The bypass will be 2.8 miles long, partly with six lanes and partly with four lanes. Major structures include a new interchange, a 'landbridge' over a railway line, and a 1310' long tunnel. Railway overpasses include a major viaduct, and several bridges and another tunnel in soft soil.

SAM software was used for design of the precast concrete superstructures for the bypass project.

The design of the tunnel roof units was of particular interest. A special precast concrete "roof unit" based on a 6.5' wide open top configuration was developed using SAM. The program enabled quick development and investigation of a variety of roof unit options and a number of loading configurations were easily considered. Provision was also made for the future development of a building structure. An important design requirement was the load case of a 2hr hydrocarbon fire inside the tunnel. Consultant Maunsell Australia structures manager John Hart said that SAM was particularly useful for this application. "The reduction of tendon strength with temperature which varied for each layer of tendons was easily accounted for using SAM," he said.