Patow, GustavoSilva, F. and Gutierrez, D. and Rodríguez, J. and Figueiredo, M.2021-06-182021-06-182021978-3-03868-152-6https://doi.org/10.2312/pt.20111140https://diglib.eg.org:443/handle/10.2312/pt20111140In this paper we introduce a method for designing a class of engineering structures, namely suspension bridges. These bridges are ubiquitous in the industrialized countries, often appearing in known city landscapes, yet they are complex enough that hand-based modeling is tedious and time consuming. We present a method that finds the right proportions for such a structure through an optimization method that tries to distribute the tower positions while maintaining cable width to be a finite number. By simultaneously optimizing the span and sag of the cables of a bridge, we optimize the geometry and soundness of the structure. We present the details of our technique together with examples illustrating its use, including comparisons with real structures.I.3.5 [Computer Graphics]Computational Geometry and Object ModelingI.3.7 [Computer Graphics]Three Dimensional Graphics and Realism10.2312/pt.20111140135-140