Old Main Line Subdivision of CSX Transportation (and formerly of the Baltimore and Ohio Railroad)
In building the new railroad, Thomas and the B&O encountered many obstacles - political, legal, financial and technical - but construction of the main line continued westward during the 1830s.
Marking the junction between CSX's Metropolitan Subdivision (the current main line) and the Old Main Line Subdivision, it remains one of the former B&O's signature landmarks, and is a popular subject of railroad photography.
East Coast Main Line | West Coast Main Line | New Line Cinema | Cunard Line | White Star Line | Main | The Onedin Line | Offenbach am Main | Maginot Line | Amt (country subdivision) | Great Central Main Line | What's My Line? | Walk the Line | Stena Line | Main (river) | Line 13, Shanghai Metro | Line 13 | A Chorus Line | What's My Line | V/Line | branch line | Wirral Line | Siegfried Line | Midland Main Line | Main Street | Gyeongbu Line | Rhein-Main-Verkehrsverbund | main battle tank | Line Renaud | Line Islands |