A toll bridge across XYZ river in USA is being considered to replace the current bridge. Because this bridge, if approved, will become a part of the U.S. Interstate Highway system, the B-C ratio method must be applied in the evaluation. Initial costs of the bridge are estimated to be US$ 17,500,000, and annual operating and maintenance costs of US$ 325,000 are anticipated. In addition, the bridge must be resurfaced every 5th year of its 30-year projected life at a cost of US$ 1,250,000 per occurrence (no resurfacing cost in year 30). Revenues generated from the toll are anticipated to be US$ 2,500,000 in its first year of operation, with a projected annual rate of increase of 2.25% per year. MARR (Minimum acceptable rate of return) is 10% per year. (a) Assume that there will be no salvage value for the bridge at the end of 30 years. (i) Find the Present Worth (PW) of the benefits. Round off your final answer to the NEAREST thousand. (ii) Find the Present Worth (PW) of the costs. Round off your final answer to the NEAREST thousand. (iii) Calculate the conventional B-C ratio using PW. Round off your final answer to two decimal places. (iv) Should the toll bridge be constructed? Why? (b) Assume that the salvage value for the bridge at the end of 30 years will be US$ 100,000. (i) Find the Present Worth (PW) of the benefits. Round off your final answer to the NEAREST thousand. (ii) Will it alter your decision in Part (a) (iv)? Why?