The Bridgeport Subdivision is a railroad line owned and operated by CSX Transportation

CSX Transportation

CSX Transportation operates a Class I railroad in the United States known as the CSX Railroad. It is the main subsidiary of the CSX Corporation. The company is headquartered in Jacksonville, Florida, and owns approximately 21,000 route miles...

 in the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of West Virginia

West Virginia

West Virginia is a state in the Appalachian and Southeastern regions of the United States, bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the northeast and Maryland to the east...

. The line runs from Grafton west to Clarksburg along a former Baltimore and Ohio Rail Road line. At its east end, the Bridgeport Subdivision becomes the Mountain Subdivision

Mountain Subdivision

The Mountain Subdivision is a railroad line owned and operated by CSX Transportation in the U.S. states of Maryland and West Virginia. The line runs from Cumberland, Maryland west to Grafton, West Virginia along the original Baltimore and Ohio Rail Road main line...

; its west end is at the Short Line Subdivision

Short Line Subdivision (West Virginia)

The Short Line Subdivision is a railroad line owned and operated by CSX Transportation in the U.S. state of West Virginia. The line runs from Clarksburg west to New Martinsville along a former Baltimore and Ohio Rail Road line...

.

History

The Bridgeport Subdivision opened in 1857 as part of the Northwestern Virginia Railroad and was immediately leased by the B&O. It changed hands to CSX through mergers.