July 16, 1965 The Mont Blanc Tunnel was officially dedicated. This road tunnel, which is located beneath Mont Blanc in the Alps, links the town of Chamonix in southeastern France with the resort village of Courmayeur in northwestern Italy. (Mont Blanc is the highest mountain in not only the Alps but also all of Europe.)... Continue Reading →

June 23, 2007 A dedication ceremony was held for the Sitina Tunnel in Bratislava, the capital and largest city of the country of Slovakia in central Europe. This tunnel carries the D2 motorway underneath a section of the mountain range known as the Little Carpathians (a part of the Carpathian Mountains). The Sitina Tunnel was... Continue Reading →

June 16, 1940 The East Side Highway in the southeastern corner of Mount Rainier National Park in Washington State made its debut. The dedication ceremony for this new means of vehicular access to the park was held at the north portal of a tunnel built as a key portion of the route. This event was... Continue Reading →

May 3, 2017 At 3:30 p.m., a pivotal moment in the construction of the Mӕlefjell Tunnel between the municipalities of Seljord and Hjartdal in southeastern Norway took place when both halves of the structure were joined together. This breakthrough occurred four years after the construction company NCC had begun building the road tunnel. “I’ve been... Continue Reading →

April 20, 1954 A pivotal milestone took place in the development of the Rimutaka Tunnel, which runs through the mountain chain now called the Remutaka Range (known as the Rimutaka Range until 2017) in the southernmost region of New Zealand’s North Island. (This railway tunnel is specifically located between Maymorn, a rural section of the... Continue Reading →

April 2, 1914 In Canada, construction began on the Connaught Tunnel under Rogers Pass in the Selkirk Mountains in southeastern British Columbia. This tunnel carries the Canadian Pacific Railway main between Calgary, Alberta, and Revelstoke, British Columbia, and was built to replace the railroad’s previous routing over the sometimes hazardous Rogers Pass.  The tunnel – measuring... Continue Reading →

March 26, 2006 The Tunnel Tiergarten Spreebogen in the central area of Berlin was opened to vehicular traffic. This structure is part of the federal highway designated as the Bundesstraße 96, and it serves as a link between Berlin Hauptbahnhof, the main railway station in Germany’s capital city; and the locality (neighborhood) of Tiergarten in the... Continue Reading →

March 11, 1967 The Louis-Hippolyte Lafontaine Bridge-Tunnel in Canada was officially opened. This Quebec-based structure, which runs both over and beneath the St. Lawrence River and carries the Autoroute 25 expressway, links the Island of Montreal with the south shore of that river at the city of Longueuil.  This bridge-tunnel was named in honor of noted... Continue Reading →

February 9, 1875 The Hoosac Tunnel, which passes through a part of both the Berkshires and the Green Mountains known as the Hoosac Range, was opened in western Massachusetts. (“Hoosac” is an Algonquian phrase for “place of stones.”)  Construction on that 4.75-mile (7.7-kilometer)-long tunnel had begun during the early 1850s, and the first train to... Continue Reading →

December 7, 1891 A rail tunnel that had been built underneath the St. Clair River as a new transportation route between Canada and the United States was opened to passengers. This tunnel was specifically constructed to connect the town (now city) of Sarnia in the Canadian province of Ontario with the city of Port Huron... Continue Reading →

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