ABSTRACT
A bridge should be “safe, functional, economical, and good looking.” Safety cannot be compromised. A bridge must be safe under all of the loads it is designed for. Otherwise, the bridge cannot be opened to trac. Functionality should not be compromised. If four lanes are required, for example, it must provide four lanes. But in certain cases, it may still be acceptable if some lane widths are slightly dierent from the standard width recommended in the specications, as long as this does not aect safety. As well, economy and aesthetics do not have absolute standards. ere is no such thing as a “correct cost” of a bridge. It varies from place to place, time to time, and situation to situation. e cost of a bridge in
1.1 Introduction ..........................................................................................1 1.2 Four Stages of a Bridge Design ...........................................................2 1.3 Establishing the Criteria ......................................................................3
