mjstaceyuofm said:AV - great and eloquently thought out post, but...
You still didn't present any facts as to why builiding new road system in WDW is more expenseive than building a new monorail is. You added a lot of language in your post about the life-cycle cost of a transportation facility but I was talking about the actual cost to build it. If we strictly talk design and construction costs, a properly placed road/bridge facility will be cheaper than a monorail system any day of the week. There's nothing unique about WDW property that makes building a monorail cheaper than building a road network. Wetlands are wetlands. There is nothing special about WDW's wetlands vs. the wetlands in Michigan or Iowa or Colorado; whether they be in the wild or a small tract of land in the inner-city. Building on or near them whether it be a road or monorail, you are still subject to the same federal regulations. The wetland issue is a non-factor. You are required to mitigate impacts on wetlands whether it be a road or monorail system.
On the monorail side, the manufacturing of the pre-cast beams for the monorail system may use less concrete and steel than a 4-lane road, but that's only a small part of the story. You have to design each pier and particularly each footing. There's geotechnical work that's required at each pier location. And then you have to physically place each pier and beam. That *elevated* work is done via crane. THAT drives up your costs significantly. Building a road, especially in an environment like WDW where you have tons of space, is a much cheaper, quicker operation. Set your line and grade, do your earthwork, lay your base materials, get out a big paver and go! Roads are very rarely built on piles, but every pier supporting that monorail is built on some type of piling/foundation system.
I know I sound like I'm over-simplifying it, but there's so much more to building a monorail than a roadway...
I would assume, knowing AV's sources, that Disney has at least considered needing to support roadways with piers.
This website discusses the unique issues withh roads built through florida's swamps
http://build-the-skyway.com/_wsn/page5.html
Obviously it doesn't specifically involve Orlando or Disney, but Disney, given their wetlands requirments probably has to maintain similar water managment issues. The days of grading and paving are well and truely done in Florida.