OpenBridge Modeler – Help The RibbonHome Ribbon Tab Bridge Setup Bridge Setup Import Geometry toolUsed to import geometry elements that are stored in the cogo databases if they are MX (FIL), InRoads (ALG or FIL), or GEOPAK (GPK )elements.. Import Terrain toolUsed to import external terrain data into your OpenBridge Modeler project. Bridge Wizard dialog Add Bridge toolUsed to add a new bridge to the OpenBridge Modeler project. Set Active Alignment toolUsed to select an alignment in your project as the active alignment for the active bridge unit. Move Bridge to Station toolUsed to specify a new station along the current bridge alignment for the start of the active bridge. Set Active DTM (Terrain) toolUsed to select a terrain model as the current active terrain. Add Bridge Unit toolUsed to add a new bridge unit. The new unit will be the active unit.