The highway's southern terminus is at an interchange with Route 15 in Shediac. It runs northward Parallel to Route 134 as a four-lane divided highway for 7 kilometres, then becomes a Super 2 controlled-access highway. The route passes through the communities of Shediac Cape, intersecting Route 134, then crossing the Shediac River, then entering Cocagne crossing the Cocagne River. Intersecting with Route 535, the route continues through Ward Corner passing McKees Mills and Saint-Francois-de-Kent at the intersection of Route 115. The Route Crosses the Little Bouctouche River then the Bouctouche River as it enters Bouctouche. The Route then Continues to Richibucto as well as Kouchibouguac National Park. The highway reverts to a 2-lane uncontrolled access highway between the national park and the city of Miramichi to the northwest. The highway crosses the Miramichi River in the Miramichi borough of Chatham on the Centennial Bridge. Immediately after crossing the Miramichi River, Route 11 interchanges with Route 8. To follow Route 11, one must take the exit at the interchange and then continue on a 2-lane uncontrolled access highway northeast along the coast of Miramichi Bay and the Gulf of St. Lawrence as it runs around the perimeter of the Acadian Peninsula. Through this region, Route 11 typically forms the main street through most of the coastal towns and settlements such as Neguac, Caraquet, Bertrand, Grande-Anse, and Stonehaven. The only exception is a recently opened Super 2 controlled access bypass of the town of Tracadie-Sheila. Route 11 interchanges again with Route 8 at Bathurst where Route 8 has its northern terminus. Route 11 becomes a Super 2 controlled access highway from Bathurst, running northwest several kilometres inland from the coast of Chaleur Bay to Glencoe, several kilometres west of the city of Campbellton. Near Glencoe, Route 11 interchanges in a T-intersection with Route 17. To follow Route 11 further west to its northern terminus, one must turn at the intersection onto a 2-lane uncontrolled access local road which runs north to the Restigouche River taking the name Alford Drive, and then turn west and follow the river to the Interprovinciale Bridge which crosses the river at Matapedia, Quebec.
History
Since the late 1960s, Route 11 has received several upgrades and re-designations as it progresses toward eventually becoming an expressway. The most significant upgrade to the entire highway route along the east coast of New Brunswick was the opening of the Centennial Bridge which replaced a ferry service and bypassed the town of Chatham in 1967. In 1973 a new 4-lane expressway opened between Moncton and Shediac, which was then referred to as the Shediac Four-Lane Highway or Shediac Expressway. Prior to this new expressway, Route 11 followed the Shediac Road from Shediac to Moncton, terminating at Route 2, the Trans-Canada Highway in Lakeville. Route 11's southern terminus was then changed to the current interchange at Route 15 in Shediac. Controlled access Super 2 expressway sections on Route 11 were completed during the 1970s in Bathurst and the Campbellton-Dalhousie area, as well as between Shediac and Bouctouche. During the 1980s and into the early 1990s, two long stretches of Super 2 expressway were completed on Route 11; one running from Bouctouche to Kouchibouguac National Park, and another running between Bathurst and Charlo, where the existing Super 2 section running east from Campbellton ended. The Super 2 section in Bathurst was also extended eastward past Salmon Beach at the city's east end. A bypass of Tracadie-Sheila opened to traffic in 2003. Also, an extension to that existing bypass was done in 2009, linking the northern end and Six-Roads, near Pokemouche. A bypass of Caraquet opened to traffic in 2016. Also going south from exiting Route 11 from Portage Road to Bertrand. The 13 km construction started in 2013, then finished in 2016. In 2017, work was completed on a new interchange between Route 11 and 15 in Shediac, and 7 kilometres of twinned highway. Currently, two other sections of highway are being twinned. The first is from the south side of the Shediac River to the Cocagne River, and the second from the north side of the Cocagne River to the Little Bouctouche River, meaning the highway will revert to two lanes across the Cocagne River on the current bridge.
