InfraWorks bridge and girder analysis not working

[Anonymous]

Line girder analysis is disabled even after selecting steel bridge. Is this a technical update or my mistake in selection ?

[simon_hooper]

Not a mistake, the interface is quirky at present.  The Line Girder Analysis feature is indeed only available on parametric girder bridges.  For steel composite bridges what you need to do is define a new bridge using the Precast I Girder Bridge" parametric bridge option, then change the girder section type to steel I plate or steel box (you can filter the component list on "steel").

I know, obvious right?

Simon