It's not necessary now, but it would be good to "future proof" any major project like this. Anything is possible in the future. It's like most new bridges built over rail lines are now high enough to accommodate doublestack container trains even if they aren't running at the present time. Adding a couple of feet to the clearance should be possible by increasing the tube size slightly or engineering the structure within the tube itself (the existing tunnel diameter is 18.5 to 19.5 feet).mtuandrew wrote:It would be nice to design Gateway for Plate F - that fits Superliners and gallery cars. Granted, it isn’t necessary because Superliners won’t be on the Corridor, but still.
Since bi-level equipment will be the only way to increase capacity eventually this might be vital.