Henryton Tunnel

Henryton Tunnel

The Henryton Tunnel, located near Marriottsville in Howard County, Maryland, is the third-oldest tunnel in the world that remains in active railroad use.Steve Okonski's [http://www.trainweb.org/oldmainline/oml7.htm B&O RR Photo Tours from Woodstock to Henryton] ] 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 Subdivision. Shortly after the Civil War, the tunnel was widened to accommodate double track. It was rebuilt into its current form in 1903.

References

See also

* Baltimore and Ohio Railroad
* Industrial Archaeology

External links

*Steve Okonski's [http://www.trainweb.org/oldmainline/oml7.htm B&O RR Photo Tours from Woodstock to Henryton] photos of the tunnel and its approaches
* [http://www.dnr.state.md.us/publiclands/central/patapscovalley.html Patapsco Valley State Park]


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