https://en.wikipedia.org/wiki/National_Road
The National Road (also known as the Cumberland Road)[1] was the first major improved highway in the United States built by the federal government. Built between 1811 and 1837, the 620-mile (1,000*km) Road connected the Potomac and Ohio Rivers and was a main transport path to the West for thousands of settlers. When rebuilt in the 1830s, it became the second U.S. road surfaced with the macadam process pioneered by Scotsman John Loudon McAdam.[2]
Construction began heading west in 1811 at Cumberland, Maryland, on the Potomac River.[3] After the Financial Panic of 1837 and the resulting economic depression, Congressional funding ran dry and construction was stopped at Vandalia, Illinois, the territorial capital of the Illinois Territory, 63 miles (101*km)[4] northeast of St. Louis across the Mississippi River.
The road has also been referred to as the Cumberland Turnpike, the Cumberland-Brownsville Turnpike (or Road or Pike), the Cumberland Pike, the National Pike, and the National Turnpike.[citation needed]
Today, much of the alignment is followed by U.S. Route 40, with various portions bearing the Alternate U.S. Route 40 designation, or various state-road numbers (such as Maryland Route 144 for several sections between Baltimore and Cumberland).
In 2002, the full road, including extensions east to Baltimore and west to St. Louis, was designated the Historic National Road, an All-American Road.[5]
