CSX - Clinch River Bridge[Map] Baltimore through truss bridge over Clinch River at Starnes Slant, VA Open to traffic Part of the Carolina, Clinchfield & Ohio Railroad; of the 80 bridges built on the line, the only Baltimore (Pratt) through truss bridge on the entire 277-mile line
NS - Natural Tunnel[Map] Naturally created tunnel used by SA&O in 1893 as easy passage through the mountains. Currently owned by NS and used by both NS and CSX Railroad trains. Open to traffic Railroad built through the naturally-formed tunnel in 1893. Tunnel was started around 2 million years ago and completely in under 10000 years.