Calais is a city in Washington County, Maine, United States. As of the 2020 census, it had a population of 3,079, making Calais the third least-populous city in Maine. The city has three Canada–US border crossings over the St. Croix River connecting to St. Stephen, New Brunswick, Canada.
St. Stephen is a Canadian town in Charlotte County, New Brunswick, situated on the east bank of the St. Croix River around the intersection of New Brunswick Route 170 and the southern terminus of New Brunswick Route 3. The St. Croix River marks a section of the Canada–United States border, forming a natural border between Calais, Maine and St. Stephen. U.S. Route 1 parallels the St. Croix river for a few miles, and is accessed from St. Stephen by three cross-border bridges.
Campobello Island is the largest and only inhabited island in Campobello, a geographic parish in southwestern New Brunswick, Canada, near the border with Maine, United States. The island's permanent population in 2021 was 949. It is the site of the Roosevelt Campobello International Park, Head Harbour Lighthouse, and of Herring Cove Provincial Park.
Route 1 is a highway in the southern part of the Canadian province of New Brunswick. It begins in the west from the Canada–United States border at St. Stephen, and runs east for 239.11 kilometres (148.58 mi) to Route 2 at River Glade.
The St. Croix River is a river in northeastern North America, 71 miles (114 km) in length, that forms part of the Canada–United States border between Maine (U.S.) and New Brunswick (Canada). The river rises in the Chiputneticook Lakes and flows south and southeast, between Calais and St. Stephen. It discharges into Passamaquoddy Bay, in the Bay of Fundy.
The Canada–United States border is the longest international border in the world. The boundary is 8,891 km (5,525 mi) long. The land border has two sections: Canada's border with the contiguous United States to its south, and with the U.S. state of Alaska to its west. The bi-national International Boundary Commission deals with matters relating to marking and maintaining the boundary, and the International Joint Commission deals with issues concerning boundary waters. The agencies responsible for facilitating legal passage through the international boundary are the Canada Border Services Agency (CBSA) and U.S. Customs and Border Protection (CBP).
The New Brunswick Southern Railway Company Limited is a 131.7 mi (212.0 km) Canadian short line railway owned by the New Brunswick Railway Company Limited, a holding company that is part of "Irving Transportation Services", a division within the industrial conglomerate J.D. Irving Limited.
The Clair–Fort Kent Bridge is a steel truss bridge crossing the Saint John River between Clair, New Brunswick in Canada and Fort Kent, Maine in the United States.
St. Croix is a rural community in York County, New Brunswick, Canada.
The East–West Highway is a long-proposed east–west highway corridor in northern New England, intended to link remote northern communities in those states with markets in the Maritimes, Quebec, and upstate New York.
The Edmundston–Madawaska Bridge is an international bridge which connects the cities of Edmundston, New Brunswick, in Canada and Madawaska, Maine, in the United States, across the Saint John River. The bridge consists of four steel through truss spans, each 70.71 metres (232.0 ft) in length, for a total length of 287.12 metres (942.0 ft), which carries a two lane open steel grid deck roadway.
The Saint Leonard–Van Buren Bridge is an international bridge, which connects the communities of St. Leonard, New Brunswick in Canada and Van Buren, Maine in the United States, across the Saint John River.
The Milltown International Bridge is an international bridge and the main link of the Calais–Milltown Border Crossing, which connects St. Stephen, New Brunswick, in Canada and Calais, Maine, in the United States, across the St. Croix River.
The Franklin Delano Roosevelt Memorial Bridge is an international bridge which connects the community of Lubec, Maine in the United States with Campobello Island in the Canadian province of New Brunswick across the Lubec Narrows. The decked steel beam bridge is named for Franklin D. Roosevelt, the 32nd President of the United States, who maintained a summer retreat on Campobello Island. A plaque in the middle of the bridge is the easternmost physical marker of the Canada–United States border.
The International Avenue Bridge is an international bridge across the St. Croix River, connecting the town of St. Stephen, New Brunswick in Canada with the city of Calais, Maine in the United States.
Woodland Rail, LLC is a non-carrier railroad company that owns an 11.83 mi (19.04 km) rail line located in the state of Maine and province of New Brunswick. It was formed in 2012 as a subsidiary company of Woodland Pulp, LLC, which owns and operates a pulp mill in the Woodland neighborhood of the town of Baileyville, Maine.
The Orient–Fosterville Border Crossing is an international border crossing between the towns of Orient, Maine, United States and Fosterville, New Brunswick, Canada on the Canada–US border. At this crossing, the United States is still operating the original border station built in 1937, which was listed on the National Register of Historic Places in 2014. Canada built its current border station in 1986. This section of the border is a series of lakes and streams that supply the St Croix River. The original bridge connecting Orient with Fosterville was said to be the shortest international bridge between the US and Canada.
The Calais–Milltown Border Crossing connects the towns of Calais, Maine and St. Stephen, New Brunswick on the Canada–US border. This crossing is located at the Milltown International Bridge. Various bridges have existed at this location since 1825. Canada built its border crossing station in 1967. The US border station was built in 1938 and was rebuilt in 2014.
The International Avenue Border Crossing connects the towns of Calais, Maine and St. Stephen, New Brunswick via the International Avenue Bridge on the Canada–US border. The crossing opened on November 16, 2009, and was the first new border crossing to open on the Canada–US border in 42 years. The opening of the crossing marked the first time since 1961 that there have been three bridges connecting Calais with St. Stephen. Currently, all commercial vehicles crossing between these towns must use this crossing.
The Ferry Point Bridge Crossing connects the towns of Calais, Maine and St. Stephen, New Brunswick on the Canada–US border. This crossing is located at the Ferry Point International Bridge. Various bridges have existed at this location since 1826. In 1847, a more substantial covered toll bridge was completed. It was replaced by a steel bridge in 1895 that featured a streetcar line, and it no longer required payment of a toll. This bridge was for many years the principal crossing point between the two communities. In 2009, after the completion of the International Avenue Border Crossing, commercial trucks were prohibited from crossing the border at this location, significantly reducing the through truck traffic passing through the nearby downtown areas.
SR 9 
USBR 1 
