This is a 50mm bridge test. I was originally printing Triffid_hunter's Bridge Torture Test although Slic3r was printing layers on top of layers without moving up. This must have been a bug or something so I designed my own Bridge Test. I have printed the Bridge Torture Test recently and Slic3r seemed to do okay with it. If you are having trouble printing that one try this one.

I've based the design off the Bridge Torture Test with some modifications. The Struts are lower 5mm instead of 10mm. The Struts are solid instead of hollow.(Use Infill) The word Test is on the top instead of a ring. These are the major modifications. If you have any problems let me know.

Print.
Adjust Settings.
Repeat until satisfied.