Pittsburg and Shawmut Railroad

Infobox SG rail
railroad_name=Pittsburg and Shawmut Railroad
logo_filename=pandslogo.gif
logo_size=150
marks=PSR and PS
locale=Brockway, Pennsylvania to Freeport, Pennsylvania
start_year=1916
end_year=2004
successor_line=Buffalo and Pittsburgh Railroad
old_gauge=
hq_city=Kittanning, PennsylvaniaThe Pittsburg and Shawmut Railroad Company reporting mark|PSR also known as the Shawmut Line, was a former short line railroad company operating passenger and freight service on standard gauge track in central and southwestern Pennsylvania.

The Pittsburg and Shawmut Railroad is often confused with the similarly named Pittsburg, Shawmut and Northern Railroad from which the P&S had its origins. Further adding to the confusion is the fact that both were nicknamed the "Shawmut Line", both operated in roughly the same geographic area, and both used similar diamond logos during their history. In fact the two were separate and unrelated companies after their 1916 split.

The main line consisted of approximately 88 miles (140 km) of standard gauge track extending from Brockway, Pennsylvania to Freeport, Pennsylvania. The main shops were located in Brookville, Pennsylvania.

The Pittsburg and Shawmut Railroad Company began life on July 21, 1903 as the Brookville & Mahoning route of the Pittsburg, Shawmut & Northern Railroad. When the Pittsburg Shawmut & Northern declared bankruptcy in 1905, the Pittsburg & Shawmut RR was spun off into a separate entity and was chartered as a separatecompany in 1916. Like its parent, the P&S was also financially troubled in its early years. The company struggled until corporate fortunes improved with the war mobilization of the 1940s. Coal was the principle commodity for the line for its entire existence. Doodlebugs and passenger trains ran on the route in the early years but had all been eliminated by 1939.

The company acquired a ten mile section of Conrail track running from Sligo to Lawsonham in 1989 and reorganized it as the Red Bank Railroad. On December 31, 1991 the company purchased about 110 miles of "low grade secondary" track from Lawsonham to
Driftwood, Pennsylvania from Conrail and organized it as the Mountain LaurelRailroad. The company operated under its own management until 1996 when it was acquired by the Genesee and Wyoming. The Genessee and Wyoming operated the Pittsburg & Shawmut Railroad under its own banner until January 1, 2004 when it was absorbed into the Buffalo and Pittsburgh Railroad, another G&W company. Several portions of the main line were abandoned before the absorption and several other since.The spelling of "Pittsburgh" as "Pittsburg" derives from the company’s origins in thePittsburg, Shawmut & Northern Railroad. That company was chartered in 1899 when the official spelling of the name of Pittsburgh, Pennsylvania was without the “h”. Thecity name was spelled "Pittsburg" from 1891 to 1911 due to an effort by the United States government to standardize the spelling of place names in the United States.