text: Twelfth Avenue At 22nd Street, the highway continues as Twelfth Avenue passing by the Chelsea Waterside Park. It passes just west of the Javits Center from 34th Street to 38th Street and over the Lincoln Tunnel at 39th Street.  The road continues past the Intrepid Sea, Air & Space Museum and Piers 84 to 92, a major cruise ship terminal building. At 54th Street, Twelfth Avenue attains a highway with service roads character, with the service roads running as far as 59th Street. From there, Twelfth Avenue becomes elevated and at 72nd Street, the highway becomes the Henry Hudson Parkway.
  West Side Elevated Highway
  Various proposals circulated in the 1920s to build an expressway on the west side. Among the proposals:
  Rail/Highway Double Decker – The New York Central Railroad proposed building a highway/rail double decked highway from 72nd Street to Canal Street, which would be constructed privately at no cost to the city.  It would eliminate 106 grade crossings over 84 blocks. It ran into opposition because of fears that it would create a rail monopoly.
  Hencken's Ten-story Train/Car/Office/People Mover – Engineer John Hencken proposed an exotic ten-story complex with a rail line underground, a road at street level, and a people mover built above that, topped by ten stories of apartments and offices. The highway would run on top of the ten-story buildings.