In the case of a truss bridge, a post-tensioned slab bridge, or a box girder bridge the sections are often floated to the bridge and then lifted into place by cranes on barges or cranes sitting over piers.
The very good reason why the word communism is so commonly associated with these revolutionary, anti-liberal, anti-democratic Marxists is that political parties with communist in the name were pretty much invariably of that bent throughout the 20th century, whereas parties called socialist or social democrat or labor varied enormously in ideology.
communist. ( 1 initial capital letter) a member of the Communist Party or movement. 2  an advocate of communism. 3  a person who is regarded as supporting politically leftist or subversive causes. ( 4 usually initial capital letter) a Communard. ( 5 initial capital letter) of or relating to the Communist Party or to Communism.