Bridge Engineering

  Bridge Engineering 
 Design, Rehabilitation, and Maintenance of Modern Highway Bridges

Bridge Engineering

when the average individual is asked to think of a bridge, some pretty impressive images usually come to mind. The Golden Gate and Brooklyn bridges might strike you if you are an American. Perhaps one would think of the Firth of Forth Bridge if you hailed from the United Kingdom. For the historically minded, Pont du Gard is almost always a favorite choice. Without a doubt, these are magnificent structures and volumes have been written on their history and the engineering behind them; but what of the common highway bridge structure? Although you probably feel a bump
every time your automobile hits an expansion joint, most people and even many engineers take these average highway bridges for granted. The common highway bridge structure, however, is one of the most integral components in any transportation network. It is also one of the most exciting design projects a civil engineer can be engaged in.

By common highway bridges, we imply structures which typically consist of a slab-on-stringer configuration crossing relatively short span lengths. The deck is usually a concrete slab which rests on a set of girders composed of one of the following types:
  •  Steel rolled sections or plate girders
  • Prestressed concrete beams
  • Timber beams
There are a wide variety of other forms of bridge structures in use
(suspension, cable-stayed, arch, truss, concrete, or steel box girder, etc.), however, the backbone of the modern transportation network is the slab-on-stringer type structure. The Golden Gate, and other major bridges like it, also carry traffic, and can quite rightly be called highway bridge structures.

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