How we make an arch bridge with Openbridge
OpenBridge Modeler is being developed for the most common bridges workflows, but in OpenBridge Designer you can use RM Bridge Enterprise that is our one-tool-for-all solution. It offers the flexibility to model and analysis any bridge structure type, for Arch bridges modeling check the Wiki article below.
For an Arch you can use as reference the dataset and documentation you can find at File\Examples\Verification Examples and FAQ\ Modeler Link Segments & Truss Modeling as shown in the image and explained in the Wiki link below.
An arch would use the same concept of creating different independent Parts in the Cross-section and making the distance between them a variable.