Boston, concurrent with I-95 and I-93 east to Braintree and north through Downtown Boston. The Tobin Bridge and Northeast Expressway take US 1 out of Boston, after which it again parallels I-95 as a high-speed surface road through Newburyport to the New Hampshire state line. The short portion of US 1 in New Hampshire follows the historic Lafayette Road, staying close to I-95, passing through Portsmouth before crossing the Piscataqua River on Memorial Bridge, which was demolished and replaced during 2012–2013, leaving a temporary gap in US 1. During construction, drivers had to detour to one of two other nearby bridges carrying US 1 Bypass or I-95. Within Maine, US 1 begins as a parallel route to I-95 near the Atlantic Ocean. At Portland, I-95 splits off to the north, and I-295 heads northeast paralleling US 1 to Brunswick. There US 1 turns east as a mostly two-lane road along the coast to Calais; much of this portion is advertised as the "Coastal Route" on signs. North from Calais, US 1 follows the Canada–US border, crossing I-95 in Houlton and eventually turning west and southwest to its "north" end at the Clair–Fort Kent Bridge in Fort Kent. The short Route 161 extends north on the New Brunswick (Canada) side of the bridge to Route 120, a secondary east–west route from Edmundston, New Brunswick, west to Quebec Route 289 toward Saint-Alexandre-de-Kamouraska, Quebec. History The direct predecessor to US 1 was the Atlantic Highway, an auto trail established in 1911 as the Quebec–Miami International Highway. In 1915, it was renamed the Atlantic Highway, and the northern terminus was changed to Calais, Maine. Due to the overlapping of auto trail designations, portions of the route had other names that remain in common use, such as the Boston Post Road between Boston and New York City, the Lincoln Highway between New York and Philadelphia, the Baltimore Pike between Philadelphia and Baltimore, and the Dixie Highway in and south of eastern Georgia. North of Augusta, Georgia, the highway generally followed the Atlantic Seaboard Fall Line, rather than a more easterly route through the swamps of the Atlantic Plain. Brickell Avenue is the name given to the stretch of US 1 in Miami, Florida, just south of the Miami River until the Rickenbacker Causeway. When the New England road marking system was established in 1922, the Atlantic Highway within New England was signed as Route 1,