Interstate 478
Interstate 478 is an unsigned designation for the Brooklyn-Battery Tunnel, which connects Lower Manhattan with Brooklyn. Â The tunnel is approximately 1.75 miles long; the Interstate, which includes approach ramps, clocks in at 2.14 miles. Â I-478 is one of those rare three-digit interstates which does not connect to its parent route (Interstate 78), yet it does connect to another 3di of the same parent (Interstate 278, on the Brooklyn side). Â The route number was chosen because initial plans were to connect the tunnel underground to the Holland Tunnel, which carries I-78 across the Hudson River to New Jersey.
Southern Terminus: Brooklyn, NY (map)
Northern Terminus: Manhattan, NY (map) (Flickr set)
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