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.
Like most religions, Communism operated on irrational faith; people in Communist countries had to have absolute faith in the Communist system and its leaders. Thinking for oneself was strictly verboten in Stalin's Russia, Mao's China, and Ho's Vietnam.ar from being an example of the evils that occur when religion is removed in society, Communism is a perfect example of the excesses and horrors that result when religion is allowed to take over a society. The Communist Party acted just like the church had in Medieval Europe.