Here are a few features that cause our center to be much more expensive than the others:
1. Structured Parking - The JRTC design includes two parking garages that when combined, total over 2,000 parking spaces. On average, you'll pay somewhere around the +$20k/space range to construct a garage. With simple math, that's at least $40 million spent on parking alone. On the other hand, most of the other centers don't include structured parking.
2. Office Building - The JRTC includes a new office building for JTA. Most of the other centers don't have a major office facility attached to them.
3. Separate Terminals - The JRTC includes individual terminals for rail, skyway/BRT, local bus and Greyhound. In short, the JRTC is really several separate transit stations placed next to each other as opposed to being a true intermodal center. That means we're spending four times as much on spaces such as restrooms, waiting areas, construction labor, etc. On the other hand, most of the other transit centers have shared terminal spaces. Considering it works for airports (ex. at JIA, a single terminal serves Airtran, Delta, Jetblue, etc.), it should be able to work for ground transportation too.
^These three things alone will significantly push your capital costs up and we still haven't dived into the arena of annual maintenance costs for multiple facilities as opposed to shared facilities.
This would mean a complete redesign but looking at Ock's map, why not attempt to place ALL bus operations on the three blocks bounded by the I-95 off ramps, Forsyth, Lee and Bay Streets and use the space around the skyway terminal as a centralized terminal for all of those operations? Also, instead of immediately building structured parking, use the existing paved lots in the area as parking until the market is ready for private sector infill development in the area. The more and more I look at this thing, significant improvement that will make it more efficient and drop costs can be done regardless of what eventually takes place with the convention center.