this is what i'm talking about :p, but they had these type of plans since before the big dig and the city "fathers" at the time though hmmm lets wait and see what happens in Boston first LOL.
In 1997, the Regional Plan Association (RPA) released a report paid by the New York City Council indicating that a tunnel to replace the elevated Gowanus Expressway was not only technically feasible, but also desirable aesthetically to surrounding communities. The tunnel would begin at the intersection of the Gowanus Expressway, Belt Parkway and the Verrazano-Narrows Bridge approach (I-278) in Bay Ridge. The Gowanus Tunnel would continue north through Sunset Park and under the Gowanus Canal to Red Hook, terminating at the Brooklyn-Queens Expressway (I-278) and the Brooklyn-Battery Tunnel approach (I-478).
Under the RPA plan, the increased space provided by the demolition of the elevated Gowanus Expressway would be used to develop a tree-lined boulevard along Third Avenue. Eventually, esplanades and parks would be created along the Bay Ridge, Sunset Park and Red Hook waterfronts.
In 2001, the NYSDOT began to study 13 different tunnel alternatives for the Gowanus Expressway from the Verrazano-Narrows Bridge approach to the Brooklyn-Battery Tunnel approach. While the north-south alignments of the proposed Gowanus Tunnel differed - routes were selected along the waterfront, First Avenue, Second Avenue and Third Avenue - most alignments featured the following design conventions:
Four inbound (eastbound) and three westbound (outbound) lanes would be provided through the tunnel. One lane in the eastbound direction would be established for HOV use during peak periods.
New interchanges would be constructed so as to minimize weaving problems. There are to be new underground grade-separated interchanges at the Belt Parkway, Prospect Expressway (NY 27) and the Brooklyn-Battery Tunnel (I-478), and reconstruction of existing highway approaches to the Gowanus Tunnel.
Five of the 13 alternatives move the terminus of the Belt Parkway to the Verrazano-Narrows Bridge approach, providing a direct connection to the Gowanus Tunnel at this point.)
Eight of the 13 alternatives provide a new underground trumpet interchange in the vicinity of 39th Street to serve the Sunset Park area.
Two of the 13 alternatives provide a 9,250-foot-long deepwater tunnel beneath the Brooklyn piers. The tunnel would be constructed at least 75 feet beneath the surface to permit operation of the deepwater port.
The NYSDOT prepared a comprehensive environmental impact statement to determine the best way to improve the expressway, and in 2006 gave preliminary approval to build a 3.5-mile-long, seven-lane tunnel costing an estimated $12.8 billion. Before any construction takes place, a number of obstacles from existing utility and sewer lines to the placement of a cross-harbor freight rail tunnel, need to be taken into account. Finally, if a tunnel were to be built, one or more methods - bored tunnel, cut-and-cover tunnel or immersed tunnel - may be used. The tunnel would be scheduled for completion by 2020.
they had so many of these studies over the years never actually would have the balls or money to do it.
oh check out the site tons of interesting stuff about the Gowanus.
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