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Flat Rock Tunnel

Historic American Engineering Record in PennsylvaniaLower Merion Township, PennsylvaniaNorfolk Southern Railway tunnelsRailroad tunnels in PennsylvaniaReading Railroad tunnels
Transportation buildings and structures in Montgomery County, Pennsylvania
Flat Rock tunnel, Reading R.R., length 940 feet, from Robert N. Dennis collection of stereoscopic views
Flat Rock tunnel, Reading R.R., length 940 feet, from Robert N. Dennis collection of stereoscopic views

The Flat Rock Tunnel is an active railroad tunnel located on Norfolk Southern's Harrisburg Line near Manayunk, Pennsylvania, United States. The tunnel was built by the Reading Railroad for its line along the Schuylkill River. Construction of the tunnel started in 1836 and it opened in 1840. In 1858-9 the Flat Rock and Black Rock Tunnels were widened to accommodate the wider rolling stock from the Lebanon Valley Branch. The spacing between the tracks was increased from 4 feet (1.2 m) to 6 feet (1.8 m). The widening of the tunnel was the first project to employ electric detonation of multiple explosive charges.

Excerpt from the Wikipedia article Flat Rock Tunnel (License: CC BY-SA 3.0, Authors, Images).

Flat Rock Tunnel
Schuylkill Expressway, Lower Merion Township

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Wikipedia: Flat Rock TunnelContinue reading on Wikipedia

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Latitude Longitude
N 40.035277777778 ° E -75.244166666667 °
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Schuylkill Expressway

Schuylkill Expressway
19427 Lower Merion Township
Pennsylvania, United States
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Flat Rock tunnel, Reading R.R., length 940 feet, from Robert N. Dennis collection of stereoscopic views
Flat Rock tunnel, Reading R.R., length 940 feet, from Robert N. Dennis collection of stereoscopic views
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