Youngwood to Mammoth

The Sewickley Branch

Point of Interest

GOOGLE MAPS no longer available: With apologies, I am unable to continue showing Google Maps. Google has forced my hand by increasing their map usage fee from nothing/free to OVER $300 A MONTH for the Abandoned Rails website! This is an expense that I simply cannot afford. Rest assured I am looking at available open source alternatives, so maps should be back online soon!

Greg Harrison

Showing of

A bridge abutment of the Sewickley Branch near Armbrust, just east of Youngwood. This section of the line was torn up in the mid-1980s. Photo by Alix Kunkle, April 2007.

The Sewickley Branch started at the Pennsylvania Railroad's Southwest Branch at Youngwood, PA, and served local mines to the east. It was composed of several smaller branches:

  • The Sewickley Branch
  • The Boyer Run Branch
  • The Brinker Run Branch
  • The Mammoth Branch
  • The Bessemer Branch
  • The Margeurite Branch

Each of these branches were named for a creek/river to which they ran adjacent, or for a township near the branch's end.

As the mines dwindled in output, so did the usefulness of the lines, until they were all abandoned by the 1980s.

Historic ICC Abandonment Filings

Docket Number: 11386 Date: 10/19/1936 Section: 1
App. for authority to abandon 1.5 miles of track at the terminus of the Sewickley Branch extending from its connection with the Bessemer Branch to its terminus in the village of Trauger, all in the County of Westermoreland, Pennsylvania.
Length: 1.5 miles Citation:  

i noticed an abandoned beridge on the map.does anyone know if it is still there?please let me know.thank you.

george oakley
reading, PA


I purchased part of the Marguerite branch from Shinsky Road to its terminus in or close to Marguerite. e-mail me if you wish.



i was just wondering about the bridge and if it was removed.please let me know.thanks.

george oakley
reading, PA


The 'Unknown and Abandoned Right of way' marked on the map is, I believe, part of the old West Penn Railway Trolley Line. Notice the power line along the route - the trolley line mostly followed the power lines (the line provided power to the trolleys). If you follow the power line, you can, more or less, follow the old right of way. It was abandoned in the 50's.

Jerry Gluch
Irwin, PA


Shortened Link:

Do you have any pictures or information about The Sewickley Branch? Please . You will get credit for anything you contribute.