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    District 1 Projects - Mercer County

    Route 18 and Williamson Road Intersection Project

    Route 18 and Williamson Road Intersection

    Project Status

    Step 1:
    Development

    Step 2:
    Design

    Step 3:
    Construction

    Step 4:
    Completed

    Project Overview

    County: Mercer
    Municipalities: Hempfield, West Salem, and Sugar Grove townships
    State Route: Route 18
    Local Name: Conneaut Lake Road
    Project Type: Intersection Improvement
    Expected Construction Season: 2025
    Last Updated: September 30, 2023

    This project is to realign the east side of Williamson Road at its intersection with Route 18 in Hempfield, West Salem, and Sugar Grove townships, Mercer County.

    The intersection is located on Route 18 (Conneaut Lake Road) just north of Thiel College on the north side of Greenville.

    The project will include realigning Williamson Road on the east side to be directly opposite its intersection on the west side. It is currently offset by approximately 10 to 12 feet. It will also include radii improvements at all corners and sight distance improvements on the southeast corner of the intersection.

    Work is expected to occur during the 2025 construction season.

    This project is funded at least in part by the Bipartisan Infrastructure Law (BIL). 

    Traffic Impact

    A detour for Williamson Road will be required during construction and is expected to be in place for approximately four months. The proposed 3-mile detour route will be posted using Route 58 (College Avenue) and Route 358 (East Main Street/ Hadley Road).

    Some work will require temporary lane restrictions on Route 18 with traffic control by flaggers.

    Contact Information

    Michael R. Hunkele, P.E.
    Project Manager
    814-678-7173
    mhunkele@pa.gov 

    Jill Harry
    Press Officer
    814-678-5035
    jharry@pa.gov

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