November 13, 1927The Holland Tunnel opens to traffic as the first Hudson River vehicle tunnel linking New Jersey to New York City.
The Holland Tunnel is a highway tunnel under the Hudson River connecting the island of Manhattan in New York City with Jersey City, New Jersey at Interstate 78 on the mainland. Unusual for an American public works project, it is not named for a government official, politician, or local hero or person of historical interest, but for its first chief engineer. The tunnel was originally known as the Hudson River Vehicular Tunnel or the Canal Street Tunnel, it was the first of two automobile tunnels built under the river, the other being the Lincoln Tunnel.
, New York City
December 26, 1870The 12.8-km long Fréjus Rail Tunnel through the Alps is completed.
The Fréjus Rail Tunnel (also called Mont Cenis Tunnel) is a rail tunnel of 13.7 km (8.5 mi) length in the European Alps, carrying the Turin–Modane railway through Mount Cenis to an end on connection with the Culoz–Modane railway and linking Modane, France and Bardonecchia, Italy. It passes beneath the Pointe du Fréjus (2932 m) and the Col de Fréjus (2542 m).
, Frejus Rail Tunnel
March 13, 1988The Seikan Tunnel, the longest undersea tunnel in the world, opens between Aomori and Hakodate, Japan.
The Seikan Tunnel is a 53.85-kilometre (33.46 mi) railway tunnel in Japan, with a 23.3-kilometre (14.5 mi) long portion under the seabed. Track level is about 140 metres (460 ft) below seabed and 240 m (790 ft) below sea level. It travels beneath the Tsugaru Strait—connecting Aomori Prefecture on the Japanese island of Honshu and the island of Hokkaido—as part of the Kaikyo Line of Hokkaido Railway Company. The name Seikan comes from combining the on'yomi readings of the first characters of Aomori and Hakodate, the nearest major city on the Hokkaido side.