Problem $6)$: Multi$-$criteria Evaluation

Four alternatives are being considered for a highway crossing over one end of an estuary including:

steel truss bridge

concrete beam bridge

tunnel

$10$ km detour around water

A Delphi survey was undertaken and the key measures of effectiveness were ranked as follows:

Cost Savings $\frac{9}{10}$

Construction Time Savings $\frac{4}{10}$

Aesthetics $,\frac{7}{10}$

Environmental Impacts $,\frac{8}{10}$

Fuel Consumption Savings $\frac{3}{10}$

Studies of each alternative estimate the following impacts for each alternative:

$\backslash$table$[[$MOE$,$Variable,Steel Truss,Concrete Beam,Tunnel,Detour$],[$Savings$,$$ $($millions$),23,32,0,40],[\backslash$table$[[$Construction$],[$Time Savings$]],$Months,$10,9,25,15],[$Aesthetics$,$Score,$3,2,10,1],[$Environment$,$EIA Score,$6,5,2,1],[$Fuel Savings,litres ${10}^6,5,5,6,0]]$

Determine which alternative is the preferred option based on the Delphi rankings.