I am using Infraworks 360 with bridge design and roadway design modules. How can I change bridge barrier (the default style is fence)?
The barriers and guardrails are decorations. You have to edit the style of the road on which the bridge is built, and then set the Decoration target to "Shoulder" so that you can view which barrier objects you can modify. Here's a help topic on adding decorations to roads or railway styles. http://help.autodesk.com/view/ICD/2014/ENU/?guid=GUID-7AF1E4C7-E9C2-4F41-B250-BB2DD6CDEF76
Open the Style Palette, Select the Road tab, and select the style that is being used on your bridge. Double-click the style to edit it (*you may want to copy the style first, so that you can go back to the original if necessary).
Hope this helps!
Thanks,
Elliott