List of tunnels documented by the Historic American Engineering Record in Maryland

This is a list of tunnels documented by the Historic American Engineering Record in the U.S. state of Maryland.

Tunnels Survey No.Name (as assigned by HAER)BuiltDocumentedCarriesCrossesLocationCountyCoordinatesBaltimore & Ohio Railroad, Howard Street Tunnel18951984CSX Baltimore Terminal SubdivisionHoward StreetBaltimoreIndependent cityBaltimore & Ohio Railroad, Point of Rocks Tunnel1971CSX Old Main Line SubdivisionCatoctin MountainPoint of RocksFrederickBaltimore & Ohio Railroad, Harpers Ferry Tunnel18941970Former Baltimore and Ohio RailroadElk RidgeMaryland HeightsWashingtonBaltimore & Ohio Railroad, Ilchester Tunnel19031971Former Baltimore and Ohio RailroadIlchesterHoward

See also List of bridges documented by the Historic American Engineering Record in Maryland

References