The multi-year project to improve Route 18 and Route 58 near Thiel College in the Borough of Greenville, Mercer County is expected to restart in the coming weeks.
The Route 18-Route 58 Improvement Project includes Route 18 from the intersection of Route 358 to the intersection with Mill Hill Road, and Route 58 from the intersection with Route 18 to East Craig Street. The purpose of the project is to improve pedestrian accessibility and safety as well as intersection efficiency throughout the corridor.
Preliminary work is expected to restart the week of March 31, 2025, weather permitting, with major work underway the week of April 7, 2025. The project is scheduled to be completed by late October 2025.
Work started in 2024 with roadway repairs and paving on Route 18 from Route 358 to Route 58.
Construction in 2025 will be completed in five phases. Each will include traffic restrictions and detours specific to the active work. Access to drives and businesses will be maintained throughout the project.
Phase 1 – Work in this phase will include drainage, tree removal, and roadway widening along Route 18 from Shenango Street to Packard Avenue. Motorists may encounter temporary lane restrictions with traffic controlled by flaggers.
Phase 2 – Work in this phase will include drainage, roadway widening, and sidewalk and ADA-compliant curb ramp construction along Route 18 from Main Street to Packard Avenue and Orangeville Road to Front Street, as well as new signal foundations at the intersections of Route 18 and Route 58, 358, and High Street (Route 4005). Motorists may encounter temporary lane restrictions with traffic controlled by flaggers.
Phase 3 – Work in this phase will include additional roadway widening, sidewalk and ADA-compliant curb ramp construction along Route 18 from Main Street to Packard Avenue and Orangeville Road to Front Street, and reconstruction at the intersection of Route 58 and Route 18. Motorists may encounter temporary lane restrictions with traffic controlled by flaggers.
Phase 4 – Work in this phase will include additional reconstruction work, including removal of the existing pavement and installation of a new traffic signal at the intersection of Route 58 and Route 18. A one-week detour of Route 58 westbound traffic will be required during a portion of the work. Route 18 will be closed between Route 18 and 200 feet north of Packard Avenue Extension and the intersection with Ridgeway Avenue. The detour for cars will be Route 18 to Williamson Road to Route 58. The truck detour will be Route 18 to Route 322 to Route 58.
Phase 5 – Work in this phase will include the remaining milling, placing the final layer asphalt throughout the project area, landscaping, and pavement markings. Motorists may encounter temporary lane restrictions with traffic controlled by flaggers.
The contractor is Lindy Paving of New Galilee, PA. The contract cost is $7,976,304.25. The project is being funded predominately with state and federal funds. Thiel College will fund some improvements on the campus done in connection with the project.
Information on the Route 18-Route 58 Improvement Project is available online at www.penndot.pa.gov/District1 under the Projects Near You and the District 1 link.
This year PennDOT’s Northwest Region expects to work on more than 100 projects. To see a full listing of all the anticipated work, check out the 2025 Construction Book located under the Partner Resources section at www.penndot.pa.gov/District1.
PennDOT urges motorists to slow down when driving in work zones, and to be alert to changing conditions, avoid distractions and to pay attention to signs and flaggers. Drive responsibly in work zones for your safety and the safety of the workers.
Motorists can check conditions on major roadways by visiting www.511PA.com. 511PA, which is free and available 24 hours a day, provides traffic delay warnings, weather forecasts, traffic speed information and access to more than 1,000 traffic cameras.
511PA is also available through a smartphone application for iPhone and Android devices, by calling 5-1-1, or by following regional Twitter alerts accessible on the 511PA website.
Subscribe to PennDOT news and traffic alerts in Crawford, Erie, Forest, Mercer, Venango, and Warren counties at www.penndot.pa.gov/District1.
Information about infrastructure in District 1, including completed work and significant projects, is available at www.penndot.pa.gov/D1Results. Find PennDOT’s planned and active construction projects at www.projects.penndot.gov.
Find PennDOT news for the northwest region on X or Facebook.
MEDIA CONTACT: Jill Harry, 814-678-5035 or jharry@pa.gov
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