Milepost 57 to Milepost 67 Design

Project Overview

This 10 mile total reconstruction and widening project (Project) of the mainline Pennsylvania Turnpike between Mileposts (MP) 57 to 67 is located in Allegheny and Westmoreland Counties and in the municipalities of Monroeville, Murrysville, Hempfield Township, Penn Township, Manor Borough, Irwin Borough, North Irwin Borough and North Huntingdon Township. The Project will involve widening the Turnpike from two to three lanes in each direction and reconstruction of the Irwin Interchange along with improving the highway to current standards. The widened roadway will consist of three 12-foot lanes in each direction and 12-foot right shoulders separated by a 26-foot-wide median. Within the limits of the Project, two overhead structures (Trafford and Harvison Roads), and numerous structures carrying the mainline Turnpike will be replaced. The Project does not include the Pittsburgh Interchange, Northern Pike and State Route 130. The Project cost estimate is more than $300 million.

Preliminary design for this project began in 2012 and was completed in 2016, with final design starting on Trafford Road in 2015 and the MP 57 to 61.5 phase in 2016. The final design phase includes right-of-way acquisition and environmental permitting along with many design efforts including structures, traffic control, detours, utility relocations, roadway, drainage and stormwater management.

Construction on Trafford Road is expected to begin in the fall of 2017, and construction on the mainline is expected to begin in 2023.

Corridor Overview

Upon completion of the MP57 to MP67 project, the existing four-lane facility will be upgraded to a six-lane facility (three 12-foot travel lanes eastbound and westbound) with a 26-foot wide median and 12-foot outside shoulders. The project will include the construction of storm drainage facilities, stormwater facilities, pavement markings, signing, lighting, and the mitigation of impacted wetlands, streams, and other environmental features.

Bridge Overview

To accommodate the widening of the mainline Turnpike, existing bridges will be replaced to provide greater horizontal widths and to improve vertical clearances as may be necessary.

Photos of several of the project's existing bridges are provided below.

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    Trafford Road Bridge (WB-500) over Mainline

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    Harvison Road Bridge (WB-504) over Mainline

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    Mainline Bridge (WB-464) over Abers Creek Road

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    Mainline Bridge (WB-465) over Turtle Creek Industrial Railroad

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    Mainline Bridge (WB-466) over Turtle Creek

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    Mainline Bridge (WB-509) over Brush Creek

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    Mainline Bridge (WB-510) over Brush Hill Road

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    Mainline Bridge (WB-511) over Pennsylvania Avenue

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    Mainline Bridge (WB-512) over S.R. 0030, Lincoln Highway

Portion of Lyons Run Road to Close in Penn Twp., Westmoreland County Jan. 11

Beginning Jan. 11, the section of Lyons Run Road at Trafford Road/Murrysville Road (S.R. 4033) in Murrysville, Westmoreland County will close to traffic. An approximate three-mile detour will be in effect until the road reopens in mid-September.

The posted detour directs traffic to Trafford Road to Pleasant Valley Road and back onto Lyons Run Road.

The closure is needed so crews can work near a tributary leading to Lyons Run Creek prior to replacing the Trafford Road Bridge that carries traffic over the PA Turnpike at milepost 59.6. This early-action work and bridge replacement is a part of the future Total Reconstruction and Widening of the Turnpike between milepost 57 and 67, which is scheduled to start in 2023.