Fort Fairfield - Andover Border Crossing, Border crossing station between Maine and New Brunswick, United States and Canada.

Fort Fairfield–Andover Border Crossing joins Maine State Route 161 and New Brunswick Route 190. The US station, about 100 feet (30 m) west of the border, is a 1+1⁄2-story Colonial Revival brick building with a two-lane porte-cochère and flanking garage bays. The Canadian station, built in 2007, is one of the few larger than its US counterpart.

The United States border station was constructed in 1933 and became listed on the National Register of Historic Places in 2014. This recognition acknowledges the structure's historical value as a long-standing customs checkpoint.

The crossing links Fort Fairfield, Maine, with Southern Victoria, New Brunswick, joining Maine State Route 161 and New Brunswick Route 190. The boundary line itself was disputed by the United States and Great Britain during the bloodless Aroostook War of the 1830s and settled by the Webster-Ashburton Treaty in 1842.

The United States station sits about 100 feet (30 m) west of the international boundary, on the north side of Boundary Line Road, and is open 24 hours a day. The Canadian station stands in Carlingford, New Brunswick, on Route 190. The main entrance to the American building is through a lobby in one of the former garage bays on the west side.

The American-side building maintains its original porte-cochere height, with the gable roof extending outward in a design rarely seen at comparable border stations. This architectural feature reflects early 1930s customs house standards that were distinctly different from later structures.