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Pennsylvania Turnpike Allegheny Mountain Tunnel Bypass

Sector: Tunnel • Location: Pennsylvania, United States

Source: lockhaven.com

Project
Preliminary Design

A proposal by the Pennsylvania Turnpike Commission to reroute the cross-state highway by blasting a 1,000-foot-wide cut through Allegheny Mountain to replace the aging twin-tube Allegheny Tunnel. The project aims to address aging infrastructure, increased traffic volume, crashes, and hazardous material shipments by creating a 250-foot-deep gorge with new approaches on either side. The project is i

Status
Prospective
Sector
Tunnel
Location
Pennsylvania, United States of America
Updated
22 Jul 2026
Source
lockhaven.com

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Project Information

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The project “Pennsylvania Turnpike Allegheny Mountain Tunnel Bypass” is an infrastructure initiative in the Tunnel sector, located in Pennsylvania, United States. Taiyo aggregates data on it from lockhaven.com.

Participants

Not available for this record.

Status

Original status

preliminary design

Taiyo status

Prospective

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

A proposal by the Pennsylvania Turnpike Commission to reroute the cross-state highway by blasting a 1,000-foot-wide cut through Allegheny Mountain to replace the aging twin-tube Allegheny Tunnel. The project aims to address aging infrastructure, increased traffic volume, crashes, and hazardous material shipments by creating a 250-foot-deep gorge with new approaches on either side. The project is in the preliminary design stage and has been under consideration for about 30 years.

Original sector

Transportation

Budget

Location

Country

United States of America (USA)

State

Pennsylvania

Source

Source

lockhaven.com

URL

More Details

Record type

Project

Sector

Tunnel

Article published date

2026-05-10

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