3DPrinting
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What filament do you want to use? Well tuned PLA might be able to bridge that far, no chance with PETG. What is your maximum acceptable sag?
It seems like the bridge lines do not attach to anything at the very end on the layer below. In Orca Slicer you need to enable "Ensure vertical thickness" to enforce that. I'd also rotate the bridge direction by 90°, this cuts down the length of the longest bridges by half. Bridge line spacing looks good to me. Make sure that the layer on top of the bridge is printed slowly and does not start in the middle, otherwise it will be pushed back and forth.
If it is just a mock-up, consider partially filling the interior or enabling "make overhangs printable". Both will alter geometry, but so will excessive sagging.