Q2) A municipality decided to implement a project to solve the traffic jam at a certain cross section in the main street. They have identified two alternatives as follows: (10 marks) Building a steel bridge ()above the street Digging a tunnel (c)under the street Item Information Item Information Cost per ton for the $1,000 Initial cost $100,000 steel Steel quantity 500 ton required Operation and $1,000 Operation and $500 each two years starting at maintenance / year maintenance cost the end of the second year Salvage value $200/ton Salvage value Useful life 30 years Useful life Infinity If MARR, i= 5%, help the municipality management to choose from among the two alternatives using: 1) Present worth analysis ( 12 marks) 2) Annual worth analysis ( 8 marks)