This is a foldable portable bridge similar to the ones that are used by tanks in the army. 

It is easy to carry and deploy and very fun to use. It works fine with both 1/10, 1/8 and 1/6 vehicles that I could test, even with the heaviest we have tried (+12kg).

Dimensions and weight
- Unfolded: 50x28x2.8 cm
- Folded: 25x28x5.6 cm
- Weight: 570g including screws

Each ramp is 8cm wide and the gap between them is 12cm.

Requirements
4x screws M2 40mm
8x screws M3 8mm

All the files are placed in the best position to print them. You will need to use supports for the hinges and the bottom part of the ramps.

I hope you like it!