Posted by on August 14, 2011 
This is visual confirmation of the restrictions on the tunnels between Norton and Coeburn, and why anything with a Plate C clearance diagram or larger was banned. Amazingly, the N&W operated Y6bs through these bores (but not the Class As, like 1218---which were not permitted because of greater boiler overhang on curves). On a 1965 detour of Clinchfield trains over this line, rear view mirrors on some of their F7A units were snapped off! Subsequent detours followed the more generous clearances on the Interstate's Miller Yard line, further west.
Posted by Doug Foust on August 14, 2011 
Are these tunnel still in use? Amazing, I had to to do a double take on that one!!
Posted by Alabama RailFan on August 14, 2011 
Apparently the N&W did not think of the clearence for future Locomotives like the NS Dash-9W.
Posted by Alabama RailFan on August 14, 2011 
Apparently the N&W did not think of the clearence for future Locomotives like the NS Dash-9W.
Posted by Matt Jenkins on May 9, 2014 
That is one tight fit. nerve racking
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