Leesburg Inter-Quarry Tunnel - Design

Luck Stone Corporation
Luck Stone Corporation
$13 million USD
April 2017 — June 2018
Services performed
Conceptual design with various tunnel options. Final tunnel design consisting of drawings, specifications, and calculations. Client support during bid phase.
Luck Stone Corporation (LSC) opened a new quarry on the Western side of Goose Creek river, a component of the Virginia Scenic Rivers System. A tunnel connects the new Western quarry with the existing South-Eastern one below the river. The rock cover between the tunnel and the river was approximately 50 feet. The tunnel is 1275 feet long with a diameter of 45 feet. It is designed to accommodate large scale mining trucks as well as a conveyor belt for material transport which
is scheduled to be installed in the future.
Located within the Culpeper Basin, a sedimentary rock formation characterized to be of Lower Mesozoic Age. The existing Luck Stone quarry is situated in a Diabase intrusion (dyke) of this sedimentary rock.
Ashburn, Virginia, USA


  • Sequential excavation sequence for south-east portal as tunnel entered the highwall at approx. 45 egree angle
  • Tunnel crossing below goose creek with potential encouter of adverse geologic conditions
  • Long bench excavation rounds

South-East portal excavation sequence

South-East portal excavation