1955 Yellow Book ( Interstate system ) | Yellow Book map of New York City, showing a planned Interstate Highway along part of the Route 23 corridor. Route 23 uses part of two 19th-century roads, the Newark-Pompton Turnpike, which was built between 1806 and 1811, and the Paterson-Hamburg Turnpike, which was incorporated in 1806.

1955 Yellow Book ( Interstate system ) | Yellow Book map of Washington, D. C. showing a proposed Interstate Highway running to Frederick. In 1947, plans were made to construct a freeway called the Washington National Pike parallel to U. S. Route 240 ( present-day MD 355 ) between Bethesda and Frederick.

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