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Allegheny Mountain Turnpike Tunnel Bypass

Sector: Tunnel • Location: Pennsylvania, United States

Source: PennLive

Project
Planned

A Pennsylvania Turnpike Commission project to build a nearly five-mile bypass around the aging Allegheny Mountain Tunnel in Somerset County, Pennsylvania. The bypass aims to improve safety, traffic flow, and accommodate hazardous material-hauling trucks by realigning the highway through forests and around the tunnel. The project includes six lanes, a truck climbing lane, and an overpass for wildli

Status
Prospective
Sector
Tunnel, Road
Location
Pennsylvania, United States of America
Updated
22 Jul 2026
Source
PennLive

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Project Information

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

Participants

Not available for this record.

Status

Original status

planned

Taiyo status

Prospective

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

A Pennsylvania Turnpike Commission project to build a nearly five-mile bypass around the aging Allegheny Mountain Tunnel in Somerset County, Pennsylvania. The bypass aims to improve safety, traffic flow, and accommodate hazardous material-hauling trucks by realigning the highway through forests and around the tunnel. The project includes six lanes, a truck climbing lane, and an overpass for wildlife.

Original sector

Transportation

Budget

Location

Country

United States of America (USA)

State

Pennsylvania

Source

Source

PennLive

URL

More Details

Record type

Project

Sector

Tunnel, Road

Article published date

2026-05-07

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