Manipulating Asset position in the editor

Hi guys,
Is there an easier way to align objects (like sections of bridge deck) with track, than manually dragging them to line them up? Also, is there any key shortcuts (like F and G) for fine tuning the grade or slope of the same type of asset? I'm trying to 'assemble' a bridge on my Siskiyou line using some of the bridge assets from Donner pass. The bridge is on a 3%+ grade, and I'm having a hell of a time trying to get the bridge sections to line up, and be on the same gradient.
Any help would be appreciated!
Is there an easier way to align objects (like sections of bridge deck) with track, than manually dragging them to line them up? Also, is there any key shortcuts (like F and G) for fine tuning the grade or slope of the same type of asset? I'm trying to 'assemble' a bridge on my Siskiyou line using some of the bridge assets from Donner pass. The bridge is on a 3%+ grade, and I'm having a hell of a time trying to get the bridge sections to line up, and be on the same gradient.
Any help would be appreciated!