The Lehigh and Mahanoy Railroad, originally the Quakake Railroad (pronounced quake-ache), was a rail line connecting Black Creek Junction in the Lehigh Valley region of eastern Pennsylvania with Quakake, Delano, and Mount Carmel.

Opened from Black Creek Junction to Quakake in 1858 and to Mount Carmel in 1860, it allowed anthracite coal mined along the line and bridge traffic to be transported east tos New York City.

[1] The CW&E's predecessor, the Little Schuylkill and Susquehanna Railroad, graded this route as its Quakake or Lehigh Branch and opened most of it for traffic in 1840.

It was the only part of the LS&S to operate, but was abandoned it after a flood devastated the Beaver Meadow Railroad in January 1841.

The original LS&S grading used an inclined plane to connect the later CW&E main line, on the mountainside between the two tunnels, with the Quakake Branch in the valley below.

Under this authority, the Quakake built an extension in 1860 via Delano to Mount Carmel, where it connected to the Northern Central Railway's Shamokin Valley and Pottsville Railroad.

[1] Another charter supplement on March 21, 1860 allowed it to buy its roadbed from the CW&E,[1] which was then being foreclosed and reorganized as the Catawissa Railroad.

In 1866 it was built to Mount Carmel and connected to the Shamokin Valley and Pottsville Railroad owned by the Northern Central Railway.