Flat Rock Tunnel
| File:Flat Rock tunnel, Reading R.R., length 940 feet, from Robert N. Dennis collection of stereoscopic views.png
Stereo pair view
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| Overview | |
|---|---|
| Location | Lower Merion, Montgomery County, near Manayunk, Pennsylvania |
| Coordinates | Lua error in package.lua at line 80: module 'strict' not found. |
| Status | Active |
| System | Originally Reading Railroad Now Norfolk Southern |
| Operation | |
| Work begun | 1838 |
| Opened | 1840 |
| Technical | |
| Length | 940 feet (290 m) |
| No. of tracks | Originally Double Now Single |
| Track gauge | 4 ft 8 1⁄2 in (1,435 mm) |
The Flat Rock Tunnel is an active railroad tunnel located on Norfolk Southern's Harrisburg Line near Manayunk, Pennsylvania, USA. 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.[1] 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.[2]
See also
References
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<references />, or <references group="..." />External links
- Historic American Engineering Record (HAER) No. PA-539, "Philadelphia & Reading Railroad, Flat Rock Tunnel, Beneath Flat Rock Hill, west of Schuylkill Expressway (I-76), West Manayunk, Montgomery County, PA", 2 photos, 10 data pages, 1 photo caption page
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- Pages with reference errors
- Pages with broken file links
- Articles that mention track gauge 1435 mm
- Buildings and structures in Montgomery County, Pennsylvania
- Lower Merion Township, Montgomery County, Pennsylvania
- Norfolk Southern Railway tunnels
- Railroad tunnels in Pennsylvania
- Reading Railroad tunnels
- Transportation in Montgomery County, Pennsylvania
- Historic American Engineering Record in Pennsylvania
- United States rail transportation stubs
- American tunnel stubs
- Pennsylvania transportation stubs
