 The Manassas Gap Railroad was completed in 1854, it ran through Linden from Mount Jackson to Manassas Junction giving the town of Manassas its name.Today the tracks form a part of the Norfolk Southern rail system.The popular north-south Appalachian Trail crosses Hwy 55 (John Marshall Hwy) and under I-66 in Linden at County Rd 725 (Tuckers Ln.)