RM Bridge - Bridge Design, Analysis, and Construction Software
FRAMEWORK 2D+3D - Free Windows structural civil engineering software 2D/3D
midas Gen - Structural Analysis and Design
Estru3D - SourceForge presents the Estru3D project. Estru3D is an open source application.
OpenBridge Modeler - 3D Bridge Modeling Software
Structurix - Analysis of structures based on the principle of the finite element method.