I made this bridge so Sphero Indi can drive over and under without issue. I also made it so that it can be taken apart and take up less space when stored.

Use Scotch tape or white Masking tape to hold the pieces together. 

The legs and ramp work for both sides

If you are printing for Indi, it's best to print in white or black color. Any other color will be read by Indi, and the bridge will act as a color tile.

Printed on a Creality K1 Max

Infill: 15%

layer height: 2mm

Support: yes