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Leesburg Inter-Quarry Tunnel - Design

Conceptual design with various tunnel options. Final tunnel design consisting of drawings, specifications, and calculations. Client support during bid phase.
Estimated cost: Commencement:
January 01, 2017
Completion date:
April 01, 2018
Leesburg Plant
20210 Luck Lane
Ashburn, Virginia, VA 20147
United States
Technical data:
Geology description:

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.

Geology types:
Bid cost: Final cost:
$13 million USD
Service areas:
Construction methods:
Tunneling under:

Luck Stone Corporation (LSC) planned to open a new quarry on the Western side of Goose Creek river, a component of the Virginia Scenic Rivers System. A tunnel was envisioned to connect 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.

South-East portal excavation sequence
South-East portal excavation
Vertical bench drilling