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The town of Whittier is perched right on the edge of a mountain pressed up against the Prince William Sound, and you have to get through that mountain to access the town. The Anton Anderson Memorial Tunnel does the job, and is North America’s longest highway tunnel. This amazing piece of architecture is a marvel and anyone in the area should head to Whittier as the town, and tunnel, are unforgettable.
The Anton Anderson Memorial Tunnel was created in 1941 when the U.S. Army began construction of the railroad spur from Whittier to Portage. The tunnel was completed in 1943 and became Alaska’s main supply link for the war effort.
The Tunnel Portal Building houses ventilation fans, a garage for fire trucks, and an electrical sub station. The Portal is made of 14 inches of concrete and was designed to withstand a major avalanche.