McKinney Gap (Near Altapass NC)

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McKinney Gap: A Passageway Across the Appalachian Mountains

McKinney Gap, a key col in North Carolina’s Blue Ridge Mountains, provides a natural passageway across the Appalachian range, facilitating traversal through rugged terrain. Located in McDowell and Mitchell Counties at coordinates 35°53’06″N, 82°00’45″W (35.88493, -82.01258), it sits at an elevation of 2,768 feet (844 meters).

Formation and Geology

Geologically, formed during the Alleghenian Orogeny around 300 million years ago, the gap lies on the Appalachian Divide, separating the Catawba River basin (flowing to the Atlantic via Santee) from the Nolichucky (via Tennessee-Ohio-Mississippi to the Gulf). This saddle, lower than surrounding peaks like Roan High Knob (6,283 ft), exemplifies erosional processes creating accessible routes amid uplifted ridges.

Early History

Historically, named after local settler Charles McKinney (1780-1852), the gap served Native American trails and early pioneers crossing the Blue Ridge. In the early 20th century, it became pivotal for railroad expansion.

Clinchfield Railroad

The Clinchfield Railroad, chartered in 1902 by George L. Carter and completed in 1915, exploited the Nolichucky/Toe Rivers to climb and cross the Blue Ridge at McKinney Gap. The 277-mile line linked Spartanburg, SC (775 ft elevation) to Elkhorn City, KY (795 ft), transporting Appalachian coal and manifest freight. The Clinchfield tunneled slightly under the gap, starting near Altapass at an elevation of 2,628 ft.

From McKinney Gap southward, the rail line ascended via the famous Clinchfield Loops—18 tunnels and loopbacks over 13 miles—to descend 1,000 feet with a 1.2% grade. This engineering feat, using drainage from Pepper, Honeycutt, and North Fork Catawba Creeks, avoided steeper alternatives.

CSX Railroad

Today, as CSX’s Blue Ridge Subdivision, it handles freight, preserving the gap’s legacy

For More Information – Sources and Resources

The following are excellent resources for those of you wanting to explore and learn more about the history and operation of the Appalachian Railroads. These sources of information also serve as reference and historical materials for Appalachian-Railroads.org. Much of the collective railroad history data points on this website are verified across multiple sources.

  • Personal Maps & Memorabilia: Documents, maps, timetables, and track charts
  • Associations, Historical Societies and their Archives
  • Archives of Appalachia: ETSU, Johnson City TN
  • Newspaper Articles: Newspapers.com
  • Magazines/Online: ‘Trains‘, ‘Classic Trains‘
  • Books
    • Drury: The Historical Guide to North American Railroads
    • Appalachian Region
      • Grant: ‘The Louisville, Cincinnati & Charleston Rail Road’
      • Graybeal: ‘The Railroads of Johnson City
      • Huddleston: ‘Appalachian Crossings – The Pocahontas Roads‘ and ‘Appalachian Conquest‘
      • Poole: ‘A History of Railroading in Western North Carolina‘
      • Timko and Young: ‘Appalchian Coal Mines and Railroads, Vol. 1, 2, & 3‘
      • Roberts: ‘Sand Patch, Clash of the Titans‘
      • Yanosey: ‘Tidewater Triangle’
    • Atlantic Coast Line Railroad
      • Calloway: ‘Atlantic Coast Line, The Diesel Years‘
      • Griffin: ‘Atlantic Coast Line, The Standard Railroad of the South‘
      • Goolsby: ‘Atlantic Coast Line Passenger Service, The Postwar Years‘
    • Baltimore & Ohio Railway
      • Jacobs: ‘The History of the Baltimore & Ohio’
      • McGuirk: ‘Baltimore & Ohio Railroad in the Potomac Valley‘
      • Ori, Salamon and Oroszi: Baltimore & Ohio/Reflections of the Capitol Dome‘ and ‘Baltimore & Ohio/Sunburst Trail to Chicago’
    • C&O Railway/Chessie System
      • Dixon: ‘Chesapeake & Ohio, Superpower to Diesels‘, Chesapeake & Ohio in the Coalfields, ‘C&O Allegheny Subdivision‘, and ‘Chesapeake & Ohio Railway – A Concise History and Fact Book‘, and ‘The Chessie Era’
      • Dorin: ‘The Chesapeake & Ohio Railway’
      • Huddleston: ‘Riding the New River Train‘
      • Ori – ‘Chessie System‘
      • Paton: ‘Allegheny with an A’
      • Turner: ‘Chessie’s Road‘
    • Clinchfield Railroad
      • Beach: ‘The Black Mountain Railway’
      • Goforth: ‘Building the Clinchfield‘ and ‘When Steam Ran the Clinchfield‘
      • Helm: ‘The Clinchfield Railroad in the Coal Fields‘
      • Irwin & Stahl: ‘The Last Empire Builder: The Life of George L. Carter‘
      • King: ‘Clinchfield Country‘
      • Marsh: ‘Clinchfield in Color‘
      • Poteat & Taylor: ‘The CSX Clinchfield Route in the 21st Century‘
      • Stevens & Peoples: ‘The Clinchfield No. 1 – Tennessee’s Legendary Steam Engine‘
      • Way: ‘The Clinchfield Railroad, the Story of a Trade Route Across the Blue Ridge Mountains‘
    • CSX Railroad
      • Springirth: ‘CSX Transportation Heritage‘
    • ET&WNC: Listed on the website’s ET&WNC pages
    • Interstate Railroad
      • Wolfe & Wolfe: ‘Appalachian Coal Hauler’
      • Wolfe: ‘The Interstate Railroad‘
    • L&N Railroad
      • Castner, Flanary & Dorin: Louisville & Nashville Railroad The Old Reliable‘
      • Flanary: The Louisville & Nashville Cumberland Valley Division
      • Flanary, Oroszi & McKee: ‘The Louisville & Nashville in the Appalachians‘
      • Oroszi & Flanary: ‘Dixie Lines, The Louisville & Nashville Railroad‘
    • NC&StL Railway
      • Prince: ‘Nashville Chattanooga & St Louis Railway‘
    • Norfolk Southern
      • Esposito: ‘Norfolk Southern Railroad’
      • Lindsey: ‘Norfolk Southern 1995 Review‘
    • Norfolk & Western Railway
      • Newton: ‘Rails Remembered, Volumes 1-6
      • Warden: ‘Norfolk & Western: Diesel’s Last Conquest‘ and ‘Norfolk & Western’s Passenger Service’
      • Wolfe, Wilson & Mandelkern: ‘Norfolk & Western’s Clinch Valley Line‘
    • Pennsylvania Railroad
      • Jacobs: ‘The History of the Pennsylvania Railroad‘
    • Seaboard Air Line, Seaboard Coast Line, Seaboard System
      • Calloway and Withers: ‘Seaboard Motive Power‘
      • Carleton: ‘Locomotives of the Seaboard System‘
      • Griffin: ‘Seaboard Coast Line and Family Lines Railroad‘ and ‘All Lines North of Raleigh‘
      • Johnson: ‘Through the Heart of the South‘
    • Southern Railway
      • Davis: The Southern Railway, Road of the Innovators‘
      • Flanary, Lindsey & Oroszi. The Southern Railway‘
      • Webb: ‘The Southern Railway System: An Illustrated History‘
      • Wolfe: ‘Southern Railway Appalachia Division‘
    • Virginian Railway
      • Reisweber: ‘Virginian Rails’
      • Wiley & Wallace: ‘The Virginian Railway Handbook‘
  • Online Article: Flanary: ‘The Quick Service Route, The Clinchfield Railroad‘; Scientific American: ‘The Costliest Railroad in America‘
  • Online Videos: Ken Marsh on Kingsport area railroads and region’s history Video #1 | Video #2:
  • Websites:

3Cs Websites

Appalachian-Railroads.org | Clinchfield.org | Southern-Railroads.org