Maryland Midland Railroad bridge over Owens Creek and Sabillasville Road on Catoctin Mountain.

Formerly the historic Hanover Subdivision of the Western Maryland Railroad, it was acquired by CSX Railroad in the railroad consolidation period of the 1970's and 1980's; then purchased by small regional Maryland Midland in the late-80's. Nowadays, usually 5 powerful diesel locomotives are needed to haul gravel and cement trains up the steep grades of Catoctin Mountain, the easternmost mountain of the Appalachians.