 The Hudson River Expressway was an idea dating back to the 1920s.It was originally planned as a parkway extending from Yonkers to Peekskill along the east side of the Hudson River; however, the road's $55 million price tag led to its cancellation.In 1936, the New York City-based Regional Plan Association introduced plans to build a freeway from the Bronx to Albany, paralleling US 9 between the two locations.