Question: Consider a Bridge crossing 4,873 feet where the weight function is given by W = 5.9S + 16.6, the span cost amount is 3.8 $/pound

Consider a Bridge crossing 4,873 feet where the weight function is given by W = 5.9S + 16.6, the span cost amount is 3.8 $/pound and the pier placement cost is 18,777 Dollars per pier or abutment. Find the the practical optimum span length in feet. Hint, round to nearest number of integer pier spaces..

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