9/17/2024 UPDATE: (TRAFFIC IMPACTS) Additional Safety Projects Planned on Route 15 SB in City of Williamsport, Lycoming County

9/17/2024 UPDATE:  On Tuesday, September 17, 2024, between the hours of 9:00 AM and 2:00 PM, a PennDOT maintenance crew will continue to install Thermoplastic Rumble Strips across the travel lanes between the railroad tracks and Route 220 in the City of Williamsport, Lycoming County.

Traffic Impacts

  • Route 15 southbound right (driving) lane will be restricted.
    • Motorists will be directed to the left (passing) lane.
  • The entrance ramp to Route 15 southbound from Fourth Street (Route 2014) in the City of Williamsport will be closed.​

Motorists should be alert, watch for slow moving traffic, lane changes, expect delays in travel, and drive with caution through the work zone. 


Montoursville, PA – The Pennsylvania Department of Transportation (PennDOT) announces additional safety projects planned on Route 15 southbound / ramp to Interstate 180 east in the City of Williamsport, Lycoming County.

Beginning Monday, September 16, 2024, PennDOT maintenance crews plan to install Thermoplastic Rumble Strips across the travel lanes between the railroad tracks and Route 220, as an additional method to draw attention to the upcoming ramp to Interstate 180 eastbound. Motorists can expect lane restrictions and occasional closure of the Route 15 southbound on ramp from West Fourth Street (Route 2014) where work is being performed. Work will be performed between the hours of 9:00 AM and 2:00 PM, weather permitting. This project is expected to take three days to complete.

A Dynamic Curve Warning System project for Route 15 southbound is scheduled to be let in the fall of 2024 with construction beginning in 2025. The system is designed to alert high profile vehicles (tractor trailers / box trucks) approaching the Route 15 southbound curve when they are traveling over 45 MPH. Vehicle speeds will be detected upstream of the curve by radar and will activate a large message board to warn the speeding driver to slow down prior to the curve.

The Department has continued to make adjustments to advise motorists of the Route 15 southbound curve including the following:

  • Message board prior to the curve that reads “Trucks Slow Down" “Sharp Curve Ahead". This is located approximately 1.3 miles upstream from the curve, just past the Foy Avenue exit (mile marker 137).
    • The message board will remain in place until the Dynamic Curve Warning Project is complete.
  • A Portable speed trailer was placed between July 15 and August 9 to alert motorists of their speed.
  • Lighted Chevrons were installed at the curve in addition to.
  • Additional speed enforcement from local and state law enforcement.
  • Installation of larger speed limit signs, which are the largest size permitted. with orange conspicuity plaque, which are the fluorescent orange diamonds on the signs to draw the driver's attention.

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 local accounts on X.

Subscribe to PennDOT news and traffic alerts in Tioga, Bradford, Lycoming, Sullivan, Union, Snyder, Northumberland, Montour and Columbia counties at www.penndot.pa.gov/District3.

Information about infrastructure in District 3 including completed work and significant projects, is available at www.penndot.gov/D3Results. Find PennDOT's planned and active construction projects at www.projects.penndot.gov.

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MEDIA CONTACT: Maggie Baker, 570-368-4202 or magbaker@pa.gov   ​

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