I'd guess it's possible in terms of the ramping space required - the 3rd/4th St viaducts are tall enough here that you could theoretically start the incline at the vacated 3rd St. I think the bigger complications are the need to maintain access to the loading docks in the rear of the buildings along 3rd Ave, and the fact that the Cut itself is considered a contributing feature to the Warehouse District historic district - once you fill it with buildings and a street that ramps up to 5th St, what do you have left of the historic grade separation?I wonder if it would be possible/feasible to get Dock Street to connect up to 5th Street somehow, or if the grades would be too much. Having it end in a cul-de-sac is disappointing. It also occurs to me that Dock Street (the name and idea) is a completely developer driven thing at this point -- does it eventually become a city owned street? If so, are we OK with the name "Dock Street", or do we prefer something more coldly rational, like 4th Avenue North?
I guess I assumed that Dock St would remain private, but as long as you asked about the name, I prefer Dakota St:
http://www.minneapolismn.gov/www/groups ... 082469.pdf