Leonardian Mobile Bridge

The drawing of the Mobile Bridge with Parabolic Profile is found on folio 855 recto of the Codex Atlanticus. It is the best known of the many civil or strategic bridges conceived by Leonardo in his drawings. The trellis structure is made stable by a counterweight which, by means of tie rods, moves the center of gravity on the rotation pin planted on the ground. In modern times, similar solutions have been adopted for the construction of various large structures, such as bridges or barriers to stem tides and strong waves, during storms with the advantage of being able to be quickly implemented when needed and be withdrawn, making the affected section navigable again. The model uses three types of wood; Walnut, Birch and Poplar, based on construction needs. Although complex, assembly is easy thanks to the modular construction described in the instructions. Dimensions 45 x 9 x 18 320 g No. of components 57