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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.The National Road or Cumberland Road was one of the first major improved highways in the United States, built by the federal government. Construction began in 1811 at Cumberland, Maryland, on the Potomac River. It then crossed the Allegheny Mountains and southwestern Pennsylvania, reaching Wheeling, Virginia (now West Virginia) on the Ohio River in 1818. Plans were made to continue through St. Louis, Missouri, on the Mississippi River to Jefferson City, Missouri, but funding ran out and construction stopped at Vandalia, Illinois in 1839.