Drivers should be alert for lane restrictions and traffic pattern shifts as final paving operations get underway next week on Route 18 in Greenville Borough, Mercer County.
Work will be done from the intersection of Route 18 and Route 358 passed Thiel College and to the intersection of Route 18 and Mill Hill Road starting April 28, 2026, weather permitting.
Crews will be milling, making roadway repairs as needed, then paving the final two layers of asphalt. Work is expected to take three weeks to complete, after which final line painting will be done.
Drivers may encounter traffic control flaggers and should expect delays during active work hours.
The work is among the final stages of the Route 18 and Route 58 Improvement Project.
PennDOT urges motorists to slow down when driving in work zones, and also 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.pa.gov/DOTDistrict1.
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.
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MEDIA CONTACT: Jill Harry, 814-678-5035 or jharry@pa.gov