Three hinged arch bridge

This is a simplified, three hinged arch bridge that can be 3D printed.
You need to print:
arch 1 x2
arch 2 x2
beam x2
hanger_beam_1 x2
hanger_beam_2 x2
hanger_beam_3 x2
connector x4
brace_connector x4
deck x2
top_hinge x2
tension_rod 1 x2
tension_rod 2 x2
substructure x2

Hinge_bolt x4 (optional)

To simplify the installation, you can replace “brace_connector.stl” with “connector.stl”, but then you need to print a total of 12 connectors. If you fix the substructure, you don't need tension_rod 1 and 2; you can instead replace them with hinge bolts x4
It is a tight fit, so it is important to be precise in removing support material. Accuracy will vary from printer to printer, but if the part is slightly too large, you can file it.