I am an Engineer. Allow me to explain myself by shortly mentioning the following points: Firstly, I work for a large construction company. To be more precise, we specialize in the building of railway bridges. Secondly, I would like to mention that I am in the designing department. We have to look at the site for a new bridge, and then decide what type of bridge will be suitable. Lastly, we have to make recommendations to the railway company of all the alternatives, and give them some idea of the costs.