There are four competing options for the bridge: Bridge 1: expand the existing b

Question

There are four competing options for the bridge: Bridge 1: expand the existing bridge at a cost of $20 million. The plan would basically build a second two-lane bridge next to the existing bridge. Once the new bridge is operating, the old bridge would be rehabilitated to handle heavier trucks, then reopened. Bridge 2: replace the existing bridge with a new 4-lane bridge at a cost of $50 million. The old bridge would be torn down upon completion of the new bridge. An additional S5 million would be required to modify the roads to match up with the new bridge. Bridge 3: build a new 4-lane bridge that connects to the developable land to the southeast. Since the river is wider at this location, the cost would be greater. Initial estimates are that the bridge would cost $75 million if built at the narrowest location, while access roads would cost $20 million. Bridge 4: a variation on Bridge 3, this option would change the bridge location slightly to improve access to the city, while requiring a longer bridge to get over the swamps; the costs would be $90 for the bridge plus S10 million for acces. The bridge could be financed in several ways: The city could sell revenue bonds to the public and pay the interest on the bonds out of general tax revenuc. The city could sell revenue bonds to the public and charge tolls on the bridge sufficiently high to pay the interest on the bonds. The city could authorize M. Bildem to proceed with his plan to build a toll bridge with no money The city could probably fund the required connections (but not he bridge) from its on-going budget for road construction and maintenance. The economic benefits from construction of the bridge fall into several ca tegories: Reductions in travel time for people who currently use the bridge. Increased opportunities for development south of the river, leading to higher land values, new jobs, and greater real estate taxes for Cammitibridge. Preliminary analysis suggests that: Expanding or replacing the current bridge will have minor effects on traffic volume or development, since there is very little open land suitable for development near the existing routes. Building a bridge at the east end of town will provide a spark to development of that region; total traffic across the river is expected to grow quickly if a new bridge is built in that location. Also, some traffic will divert to the new bridge, reducing congestion in the city Question 6.a. (4 Points) What are the major economic benefits that could be obtained by expanding the existing bridge or building a new bridge? magnitude of these benefits? How can the city estimate the Question 6.b. (4 Points) ht are the major environmental concerns related to expanding the existing bridge or building a new bridge? What are the major social issues? Question 6.c. (4 Points) Question 6.d. (4 Points) What additional information is needed to make a decision about which Question 6.e. (4 Points) What are the main criteria that you would use in comparing the bridges, and Question 6.f. (4 Points) From the public perspective, what are the advantages and disadvantages of bridge to build? what kind of weighting scheme would you recommend for comparing the options? Mr. Bildem's

Explanation / Answer

Question 6.a ]

1- Expanding a existing bridge required less cost compare to the nre bridge.

2- Existing bridge connected to the major city area so it will be liable for short transport charges.

3- If we build New bridge, new planed bridge rout can be connected in short path to reach the locations. short p[ath of the bridge route can minimise the daily transport cost of transportation. The new brisdge can connect the developing area and due to new bridge approaching the developing area the land cost of that area must be increase and it helps to maximise the economy of the concern city.

Question 6.b ]

1- Expanding a exisitng bridge can affect the traffic flow in stippulated time.

2- Daily traffic delay due to expanding existing bridge leads to harrasement to the public and ultimately work will suffer.

3- While we planing to new bridge, The new land to be aquire for the new route.

4- Aquiring of new lands lead to high side cost.

5- May be farming lands to be aquire to construct the new bridge.

Question 6.c]

1- Public Objection for aquiring land.

2- Traffic Jam in the city.

3- Polution due to construciton activity.

4- Difficulty in mannaging traffic control.

5- Proving driversion due to construction activity.

Question 6.f]

1-Structural Audit of the Existing bridge to decide it shall be rehabilited or not.

2-Traffic flow capacity and the load capacity of the bridges.

3-Life of the Bridge.

Question 6.e ]

The main criteria for the bridges are as belows,

1- Cost.

2- Effects on the Environment.

3- Development.

4- Polution.

5-Shortest Route.

6- No of Lanes for smooth flow.

i would recommend the marks scheme for comparing the options.

Sr.No Description New Bridge Old Bridge. 1 Cost 5 9 2 Effects on the Environment 6 8 3 Development 10 5 4 Polution 5 5 5 Shortest Route 10 5 6 No of Lanes for smooth flow 9 6

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