Henryton Tunnel

Henryton Tunnel

East entrance to the tunnel. B&O widened the tunnel for double track in 1865, but converted the entire Old Main Line to single track in 1959, to utilize higher center tunnel clearances.[1]:174
Overview
Line Old Main Line Subdivision
Location Henryton, Maryland
Coordinates 39°21′04″N 76°54′46″W / 39.3512°N 76.9128°W / 39.3512; -76.9128Coordinates: 39°21′04″N 76°54′46″W / 39.3512°N 76.9128°W / 39.3512; -76.9128
System CSX Transportation
Start Near Marriottsville, MD
End Henryton
Operation
Opened 1850
Rebuilt 1865, 1903
Owner CSX
Traffic Train
Character Freight
Technical
Construction 1849-50
Length 430.4 ft (131.2 m)
No. of tracks 1
Track gauge 1,435 mm (4 ft 8 12 in)
Width 30 ft (9.1 m)

The Henryton Tunnel, located near Henryton in southern Carroll County, Maryland, is the third-oldest tunnel in the world that remains in active railroad use.[2] Constructed by the Baltimore and Ohio (B&O) Railroad and opened around 1850, it was the first tunnel constructed on the B&O's Old Main Line. In 1865 the tunnel was widened to accommodate double track. It was rebuilt into its current form in 1903. The tunnel has brick portals and lining. The coping and footings are concrete.[1]:452

See also

References

  1. 1 2 Harwood, Jr., Herbert H. (1979). Impossible Challenge: The Baltimore & Ohio Railroad in Maryland. Baltimore, MD: Barnard, Roberts. ISBN 0-934118-17-5.
  2. Steve Okonski's B&O RR Photo Tours from Woodstock to Henryton

External links


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