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Published May 11, 2026 at 8:00 PM
Updated May 15, 2026
Site work, paving and new construction of a civil project in Somerset, Pennsylvania. Conceptual plans call for the construction of a bridge / tunnel; and for paving for a road / highway.
The project proposes a major realignment of the Pennsylvania Turnpike at Allegheny Mountain, replacing the aging twin-tube Allegheny Mountain Tunnel with a large open-cut roadway through the ridge. The scope includes blasting a cut approximately 1,000 feet wide and up to 250 feet deep, constructing new highway approaches on both sides, and delivering a seven-lane roadway designed to improve safety, accommodate higher traffic volumes, and allow hazardous material transport that is currently restricted from the tunnel.
Conceptual
Bridges / Tunnels
$300,000,000.00
Public - State/Provincial
New Construction, Paving, Site Work
Plans and Specifications are not available for this project. If that changes, they will be made available here.
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November 2, 2026
PA Turnpike, Somerset, PA
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