We describe the computational methods to be used in a web based transport matching system in order to providing clients alternative transport routes, and a model for support of combined intermodal transports where time, emissions and costs are jointly handled. We use network optimization and a mixed integer linear model together with subsequent results from a feasibility test carried out within a transport corridor ranging from the west coast of Norway to Finland through Sweden. The test indicates that network optimization is a well suited methodology for this type of problem, providing swift solutions for the selected problem which is of a medium size with respect to the network size. Future development will be focused on the extension and implementation of this model in a web-based multi-criteria decision support system, able to handle conflicts between cost, time, and emissions in the recommendation of admissible transport solutions.