Creating gateway model routing sub-templates

A computer implemented method for routing a multitude of conductors through a first routing area on a planar surface is presented. The method includes receiving data representing the first routing area bounded by two opposite longitudinal sides each having a different number of a multitude of first vertices. The first routing area includes one or more blockages. The method further includes determining one or more locations on at least one of the two opposite longitudinal sides for adding one or more second vertices, and decomposing the first routing area into a multitude of second routing areas each not including any of the one or more blockages. The method further includes performing a gateway model routing (GMR) of the multitude of conductors in each of the multitude of second routing areas using the multitude of first vertices and the added one or more second vertices.