Very tedious and complicated if it's a big bridge. I once built a model of the North ramp and tower of Lion's Gate bridge, Vancouver for an engineering company. It took me almost 2 months working full time. Made much of it with Plastruct beams and girders and about 30% with plexiglas. It was 1/96 scale, and over 7 feet long and almost 30 inches high.
You can build a scale model/toy bridge out of toothpicks. You can not build a real bridge to walk on out of toothpicks.
What are different kinds of scale models
It depends what scale you wish to build it to.
with glue
To build a bridge, firstly you have to see what kind of a bridge is suitable for the particular place, it can be a wooden bridge or cemented etc. Secondly, before starting you have get a model made with the collaboration of a construction company for a proper balanced bridge.
you will need white,black and red to build a scale of a Lego titanic you will need 2,228 legos to build it so it might take you almost half of your life to finish
It depends on the scale of the model
uThere are books on building gliders, as there are scale model/ kits available at hobby shops.
For a scale model, plaster of Paris is very good.
uThere are books on building gliders, as there are scale model/ kits available at hobby shops.
So you know what and how to build it
when is the bridge the crocodile and the ostrich build