Route 110 is a highway

Highway

A highway is any public road. In American English, the term is common and almost always designates major roads. In British English, the term designates any road open to the public. Any interconnected set of highways can be variously referred to as a "highway system", a "highway network", or a...

 in New Brunswick

New Brunswick

New Brunswick is one of Canada's three Maritime provinces and is the only province in the federation that is constitutionally bilingual . The provincial capital is Fredericton and Saint John is the most populous city. Greater Moncton is the largest Census Metropolitan Area...

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

; running from Trans-Canada Highway

New Brunswick Route 2

Route 2 is a major provincial highway in the Canadian province of New Brunswick, carrying the main route of the Trans-Canada Highway in the province...

 exit 153 in Florenceville

Florenceville, New Brunswick

Florenceville-Bristol is a Canadian town situated in the Northwest part of New Brunswick in the St. John River Valley. The town is located on the banks of the Saint John River, in Carleton County in the Canadian province of New Brunswick.The Town of Florenceville-Bristol is New Brunswick's newest...

, through the village of Centreville

Centreville, New Brunswick

Centreville is a village in Carleton County, New Brunswick, Canada. As of 2006 the population was 523.Centreville has a few stores, M&D Convenience Store, Freshmart, Grandma's Restaurant & Bake Shop. There is also a Home Hardware store and two stores offering good quality ladies clothing and...

, to the Canada-U.S. border near Bridgewater, Maine

Bridgewater, Maine

Bridgewater is a town in Aroostook County, Maine, United States. The population was 612 at the 2000 census.-Geography:According to the United States Census Bureau, the town has a total area of , of which, of it is land and of it is water....

, where it continues as an unnumbered connector road named Boundary Line Road to U.S. Route 1

U.S. Route 1

U.S. Route 1 is a major north–south U.S. Highway that serves the East Coast of the United States. It runs 2,377 miles from Fort Kent, Maine at the Canadian border south to Key West, Florida. U.S. 1 generally parallels Interstate 95, though it is significantly farther west between...

. Route 110 is 14.8 kilometres long.

Route 110 was known as Route 6 until 1965, and Route 555 between 1965 and 1976.