In the U.S. state of Massachusetts, U.S. Route 1 (US 1) is a major north–south route through Essex, Middlesex, Suffolk, Norfolk, and Bristol Counties. The portion of US 1 south of Boston is also known as the Boston-Providence Turnpike, Washington Street, or the Norfolk and Bristol Turnpike, and portions north of Boston are known as the Northeast Expressway and the Newburyport Turnpike.