41. Recent development near Eugene, Oregon, has identifi ed a need for improved access to Interstate 5 at one location. Civil engineers and public planners are considering three alternative access plans. Benefi ts are estimated for the public in general; disbenefi ts primarily affect some local proprietors who will see traffi c pattern changes as undesirable. Costs are monetary for construction and upkeep, and savings are a reduction in cost of those operations today that will not be necessary in the future. All fi gures are relative to the present situation, retention of which is still an alternative, and are annualized over the 20-year planning horizon.

a. What is the B/C ratio for each of these alternatives?

b. Using incremental B/C ratio analysis, which alternative should be selected?

c. Determine the value of B 2 C for each alternative.

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Alternative A B C Benefits $200,000 $300,000 $400,000 Disbenefits $37,000 $69,000 $102,000 Costs $150,000 $234,000 $312,000 Savings $15,000 $31,000 $42,000