Thomas Seabrook

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Thomas W. Seabrook (c. 1817 – February 24, 1897) was a 19th-century American civil engineer who was most known for his work on the construction and extension of the Pennsylvania Railroad. [1]

United States Federal republic in North America

The United States of America (USA), commonly known as the United States or America, is a country comprising 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is slightly smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U.S. is the third most populous country. The capital is Washington, D.C., and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico. The State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean. The U.S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The extremely diverse geography, climate, and wildlife of the United States make it one of the world's 17 megadiverse countries.

Civil engineer engineer specialising in design, construction and maintenance of the built environment

A civil engineer is a person who practices civil engineering – the application of planning, designing, constructing, maintaining, and operating infrastructures while protecting the public and environmental health, as well as improving existing infrastructures that have been neglected.

Pennsylvania Railroad former American Class I railroad

The Pennsylvania Railroad was an American Class I railroad that was established in 1846 and was headquartered in Philadelphia, Pennsylvania. It was so named because it was established in the Commonwealth of Pennsylvania.



His first employment with the Pennsylvania railroad (PRR) was as an engineer locating the line of the railroad for its extension to Pittsburgh as part of the Western division of the PRR prior to the opening of the Horseshoe curve in 1854. [2] He then was put in charge of Gallatzin tunnel construction as well as double tracking work on the eastern slope including Horseshoe curve. In 1857, he was promoted to resident engineer in charge of the railroad between Harrisburg and Pittsburgh. In 1859, Seabrook was appointed Chief Engineer of the Western Transportation Company with the responsibility of survey and construction for extending the PRR west of Pittsburgh towards Chicago. His last work for the Pennsylvania railroad was building the eastern end of the West Shore Railroad which was sold to the New York Central Railroad in 1885. [3] He died in Philadelphia in 1897.

Horseshoe Curve (Pennsylvania) triple-tracked railroad curve on the Norfolk Southern Railways Pittsburgh Line.

Horseshoe Curve is a three-track railroad curve on Norfolk Southern Railway's Pittsburgh Line in Blair County, Pennsylvania. The curve itself is about 2,375 feet (700 m) long and 1,300 feet (400 m) in diameter; it was completed in 1854 by the Pennsylvania Railroad as a way to lessen the grade to the summit of the Allegheny Mountains. It eventually replaced the time-consuming Allegheny Portage Railroad, the only other route across the mountains for large vehicles.

Gallitzin Tunnel railway tunnel

The Gallitzin Tunnels in Gallitzin, Pennsylvania, formed the Pennsylvania Railroad's passage through the Allegheny Mountains in western Pennsylvania. Their ownership has since passed to Penn Central Transportation Company, then to Conrail, and most recently to the Norfolk Southern Railway. East of the tunnels is the famous Horseshoe Curve. The tunnels are currently used by Norfolk Southern freight trains and Amtrak Pennsylvanian passenger trains.

West Shore Railroad historic railroad fromNew Jersey to New York City

The West Shore Railroad was the final name of a railroad that ran from Weehawken, New Jersey, which is across the Hudson River from New York City, north along the west shore of the river to Albany, New York and then west to Buffalo. It was organized as a competitor to the New York Central and Hudson River Railroad, but was soon taken over by that company.

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The Pennsylvania Turnpike is a toll highway operated by the Pennsylvania Turnpike Commission (PTC) in the U.S. state of Pennsylvania. A controlled-access highway, it runs for 360 miles (580 km) across the state. The turnpike begins at the Ohio state line in Lawrence County, where the road continues west into Ohio as the Ohio Turnpike. It ends at the New Jersey border at the Delaware River–Turnpike Toll Bridge over the Delaware River in Bucks County, where the road continues east as the Pearl Harbor Memorial Extension of the New Jersey Turnpike.

Allegheny Portage Railroad former railroad in Pennsylvania

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Horseshoe curve

A horseshoe curve is a class of climbing curve in a roadbed which reverses turn direction (inflection) twice on either side of a single tight curve that varies through an angle of about 180 degrees or more.

New York Tunnel Extension

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John Edgar Thomson American businessman

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The Pittsburgh, Fort Wayne and Chicago Railway was a major part of the Pennsylvania Railroad system, extending the PRR west from Pittsburgh, Pennsylvania, via Fort Wayne, Indiana, to Chicago, Illinois. It included the current Norfolk Southern-owned Fort Wayne Line east of Crestline, Ohio, to Pittsburgh, and the Fort Wayne Secondary, owned by CSX, from Crestline west to Tolleston in Gary, Indiana. CSX leased its entire portion in 2004 to the Chicago, Fort Wayne and Eastern Railroad (CFE). The remaining portion of the line from Tolleston into Chicago is now part of the Norfolk Southern's Chicago District, with a small portion of the original PFW&C trackage abandoned in favor of the parallel lines of former competitors which are now part of the modern NS system.

Northern Central Railway

The Northern Central Railway (NCRY) was a Class I Railroad connecting Baltimore, Maryland with Sunbury, Pennsylvania, along the Susquehanna River. Completed in 1858, the line came under the control of the Pennsylvania Railroad (PRR) in 1861, when the PRR acquired a controlling interest in the Northern Central's stock to compete with the rival Baltimore and Ohio Railroad (B&O). For eleven decades the Northern Central operated as a subsidiary of the PRR until much of its Maryland trackage was washed out by Hurricane Agnes in 1972; after which most of its operations ceased as the Penn Central declined to repair sections. It is now a fallen flag railway, having come under the control of the later Penn Central, Conrail, and then broken apart and disestablished. The southern part in Pennsylvania is now the York County Heritage Rail Trail which connects to a similar hike/bike trail in Northern Maryland down to Baltimore, named the Torrey C. Brown Rail Trail. Only the trackage around Baltimore remains in rail service.

The Central Railroad of Pennsylvania was a short railroad of 27.3 miles (43.9 km) built to connect Bellefonte, Pennsylvania with the Beech Creek Railroad at Mill Hall, Pennsylvania. Sustained by shipments from the Bellefonte iron industry, the abandonment of the iron furnaces there led to its demise in 1918.

Buffalo Line rail line in New York and Pennsylvania

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Main Line (Pennsylvania Railroad)

The Main Line of the Pennsylvania Railroad was a rail line in the Commonwealth of Pennsylvania, connecting Philadelphia with Pittsburgh via Harrisburg. The rail line was split into two rail lines and now all of its right of way is now a cross-state corridor, composed of Amtrak's Philadelphia to Harrisburg Main Line and the Norfolk Southern Railway's Pittsburgh Line.

Samuel Rea American civil engineer

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The Pittsburgh, Johnstown, Ebensburg and Eastern Railroad was a railroad corporation in Pennsylvania, intended to unite two local short lines in Clearfield, Blair and Cambria Counties and create a coal-hauling railroad to compete with the Pennsylvania Railroad (PRR). Highly speculative, the railroad never had the financing necessary to begin construction. Chartered in 1897, it began to lose control of the two short lines in 1900, but continued to litigate the matter until 1909. Left a paper corporation without railroad property, it was dissolved a few years later.

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George Brooke Roberts American businessman

George Brooke Roberts was a civil engineer and the fifth president of the Pennsylvania Railroad (1880–96).

Pennsylvania Railroad, Connecting Railway Bridge

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Pittsburgh Line Norfolk Southern rail line

The Pittsburgh Line is a rail line that is located in state of the Pennsylvania and it is owned and operated by the Norfolk Southern Railway. The Pittsburgh Line is Norfolk Southern Railway's primary east–west artery in its Pittsburgh Division and Harrisburg Division across Pennsylvania and it is part of the Amtrak-Norfolk Southern combined rail corridor, the Keystone Corridor.

Frederick and Pennsylvania Line Railroad Company

The Frederick and Pennsylvania Line railroad ran from Frederick, Maryland to the Pennsylvania-Maryland State line, or Mason–Dixon line near Kingsdale, Pennsylvania consisting of 28 miles (45.1 km) of center-line track and 29.93 miles (48.17 km) of total track including sidings. Chartered in 1867, the railroad started construction in 1869 and cost $868,687.50.


  1. "Railroad Gazette". New York, NY. 1897.
  2. "Railroad Gazette". New York, NY. 1897., March 5, 1897, page 176
  3. "Railroad Gazette". New York, NY. 1897., March 5, 1897, page 176