Military bridges are built very quick and they have to carry heavy arvmoured vehicles - it´s not a simple task. If river is wide enough, only puntoon bridge is possible.
The fastest way of building a long pontoon bridge is to use special amphibian vehicles.
Troops from Lithuania and Poland conduct a water crossing operation utilizing M3 Amphibious Rigs in Rukla, Lithuania, during Saber Strike 17.
Video by Austin Majors, Samuel Brooks / AiirSource Military
Saber Strike is a U.S. Army Europe-led combined forces exercise conducted annually to enhance the NATO Alliance throughout the Baltic region and Poland.
Saber Strike 17 is a month-long exercise from May 28, 2017 to June 24, 2017 and is the seventh iteration of a long-standing U.S. Army Europe-led training exercise designed to enhance interoperability among allies and regional partners.