Thanks in advance for your thoughts; we're looking to do a remodeling project, and want to remove the 'chopped up' nature of our home to make it feel more open. It is a 1986 build, nothing renovated in the space we're working in right now.
The space in question is 2x4 construction, with a 6' cutout opening between the dining and sitting rooms. It's supported by a single 2x4, but there is a large amount of wood added to the space above the opening, which has me concerned this is load bearing. The floor joists are also running perpendicular to the wall ('vertical' relative to the blueprint picture, while the wall is horizontal).
The question: can the wall come down? And if not, are there creative alternatives that could minimize how much wall we need in the space to support the floor above?
Here's the wall with the drywall removed - the goal is to remove all the studs, top plate, and header / those big pieces of wood if possible, making it one large room. Span is just under 13' total per the blueprints.
All pages of the blueprints: