The Blue Mountain Tunnel is one of two tunnels through Blue Mountain

Blue Mountain (Pennsylvania)

Blue Mountain is a ridge that forms the eastern edge of the Appalachian mountain range in the U.S. state of Pennsylvania. It cuts across the eastern half of the state from New Jersey to Maryland, providing a distinct boundary between a number of Pennsylvania's geographical and cultural regions...

 in Pennsylvania

Pennsylvania

The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

, located west of Newburg

Newburg, Cumberland County, Pennsylvania

Newburg is a borough in Cumberland County, Pennsylvania, United States. The population was 372 at the 2000 census. It is part of the Harrisburg–Carlisle Metropolitan Statistical Area.-Geography:Newburg is located at ....

. It is one of seven tunnels completed for the Pennsylvania Turnpike

Pennsylvania Turnpike

The Pennsylvania Turnpike is a toll highway system operated by the Pennsylvania Turnpike Commission in the Commonwealth of Pennsylvania, United States. The three sections of the turnpike system total . The main section extends from Ohio to New Jersey and is long...

 mainline, and at 4339 feet (1,322.5 m) in length, is the shortest of the four still in use today. The Blue Mountain Tunnel is 600 feet (182.9 m) to the east of the Kittatinny Mountain Tunnel

Kittatinny Mountain Tunnel

The Kittatinny Mountain Tunnel is a tunnel through Kittatinny Mountain in Franklin County, Pennsylvania. It is one of seven tunnels completed for the Pennsylvania Turnpike, and one of four still in use today. The Kittatinny Mountain Tunnel is 4727 feet in length, and is located 600 feet west of...

, separated by the Gunter Valley.