Advantages of Steel Bridges

Thesis: Steel bridges are the most popular construction types because of their useful features such as being environmentally-friendly and economical as well as offering high quality of material.

        I.  Environmentally-friendly

            A.  Usefulness and appearance of steel bridges for the environment

                  1.  Portable and recyclable steel bridges

                  2.  Beautiful and aesthetic steel bridges by using less energy

            B.  Steel bridges’ specific attributes to the environment

                  1.  Weathering steel bridges

                  2.  Longer span

        II. Economical

A.      Manufacturing cost

                              1. Decreased weight

                              2. Prestressed steel bridges

               B.  Long term benefits

                  1.  Life cycle cost

                  2.  Modification and repair

        III.  High quality of material                                                                                                                                                            

               A.  High quality features in building process

                     1.  Off-site fabrication

                     2.  Speed of erection          

                B.  High quality features in usage

                      1.  Strength

                      2.  Light weight 
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