POINT CLOUD TO 3D SOLID, how too?

Hi 

we have this fantastic point cloud survey of an existing bridge ,,  we are doing a rehab on and have not record plans so we assumed the point cloud survey was are best option,, no i need to make plans and details,,    i would like make a 3d solids out of the points for the bridge its slef

toally new to this, 

i want to make it a 3d solids