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- Sand_Patch_Grade abstract "Sand Patch Grade is an approximately 100-mile-long (160 km) section of railroad track known for its steep grades and curves through the Allegheny Mountains of Pennsylvania and Maryland. The line is part of the Keystone Subdivision, an East-West main line operated by CSX Transportation. The line was originally built by the Baltimore & Ohio Railroad (B&O), which became a component of the Chessie System in 1972, then was merged into CSX in 1987. A well-known landmark along Sand Patch Grade is the 4,475-foot-long (1,364 m) Sand Patch Tunnel, which was constructed between 1854 and 1871. The original one-track tunnel was abandoned after a two-track tunnel was completed nearby in 1912. The tunnels used vertical ventilation shafts with fires in them to circulate air.[citation needed] The original tunnel was abandoned in 1917 and is now flooded and collapsed in places. Dropping over 1,000 feet (300 m) in about 20 miles (32 km), Sand Patch Grade is one of the steepest railroad grades on the East Coast. In 2001, the 'SA' Tower was decommissioned and demolished. Mance, Pennsylvania, along the Sand Patch Grade is a popular spot for railfans and photographers due to the horseshoe curve located there, as well as the scenic backdrop provided by the old general store and tree farm. Also to watch the trains struggle up the steep grade, which is as much as two percent.".
- Sand_Patch_Grade thumbnail West_portal_sand_patch.jpg?width=300.
- Sand_Patch_Grade wikiPageID "30460305".
- Sand_Patch_Grade wikiPageRevisionID "593061912".
- Sand_Patch_Grade hasPhotoCollection Sand_Patch_Grade.
- Sand_Patch_Grade id "pa3235".
- Sand_Patch_Grade survey "PA-375".
- Sand_Patch_Grade title "Sand Patch Tunnel".
- Sand_Patch_Grade subject Category:Baltimore_and_Ohio_Railroad_lines.
- Sand_Patch_Grade subject Category:CSX_Transportation_lines.
- Sand_Patch_Grade subject Category:Historic_American_Engineering_Record_in_Pennsylvania.
- Sand_Patch_Grade subject Category:Rail_infrastructure_in_Maryland.
- Sand_Patch_Grade subject Category:Rail_infrastructure_in_Pennsylvania.
- Sand_Patch_Grade type Abstraction100002137.
- Sand_Patch_Grade type Arrangement107938773.
- Sand_Patch_Grade type CSXTransportationLines.
- Sand_Patch_Grade type Formation108426461.
- Sand_Patch_Grade type Group100031264.
- Sand_Patch_Grade type Line108430568.
- Sand_Patch_Grade comment "Sand Patch Grade is an approximately 100-mile-long (160 km) section of railroad track known for its steep grades and curves through the Allegheny Mountains of Pennsylvania and Maryland. The line is part of the Keystone Subdivision, an East-West main line operated by CSX Transportation. The line was originally built by the Baltimore & Ohio Railroad (B&O), which became a component of the Chessie System in 1972, then was merged into CSX in 1987.".
- Sand_Patch_Grade label "Sand Patch Grade".
- Sand_Patch_Grade sameAs m.0g5s6gs.
- Sand_Patch_Grade sameAs Q7415843.
- Sand_Patch_Grade sameAs Q7415843.
- Sand_Patch_Grade sameAs Sand_Patch_Grade.
- Sand_Patch_Grade wasDerivedFrom Sand_Patch_Grade?oldid=593061912.
- Sand_Patch_Grade depiction West_portal_sand_patch.jpg.
- Sand_Patch_Grade isPrimaryTopicOf Sand_Patch_Grade.
