Write a Expository Essay explaining how a specific infrastructure is built.

I need this within 48 hours. Write a Expository Essay explaining how a specific infrastructure is built. Bridge, skyscraper, etc. pick any infrastructure. Use 5 sources MLA style with in text citations and a works cited page. (Paper should be 5 paragraphs- 1 opening, 3 body and 1 closing.) These are a few notes that I took in class..these may help you: *Expository writing is defined as presenting reasons, explanations, or steps in a process. *Informational writing. *Should follow a logical sequence and have 3 different main points. *Logic and coherence is the main focus of an expository essay. *Write in 3rd person-he, she, it, they. *Do not tell a story. *Do not persuade a reader-Only give facts and reasons. *Expository can give the steps of a process.