Drivers who brave the Interstate 83/Route 581 split should prepare for delays, at least during overnight hours.

On Tuesday, weather permitting, crews will erect large signs over I-83 in preparation for upcoming traffic changes at the split. During overnight hours, drivers can expect 15-minute traffic stoppages both northbound and southbound, according to the state Department of Transportation.

On Wednesday night, crews will restrict northbound traffic to a single lane to reset concrete barriers. Moving those barriers will shift northbound I-83 traffic to the newly widened portion of the highway, PennDOT said.

Also Wednesday night, crews will open the newly build ramp from I-83 north to Lowther Street in Lemoyne. It is numbered Exit 41B and will serve as the new Highland Park exit. The existing Highland Park exit will close Wednesday night, PennDOT said.

The new exit will be before the I-83/581 split, about a quarter-mile before the old ramp, PennDOT said.

As of Wednesday night, eastbound Route 581 traffic headed to Lowther Street will have to use Exit 6B to I-83 south, then take the existing Exit 41B, PennDOT said.

On Thursday night, crews will restrict I-83 southbound to a single lane in order to shift southbound traffic. The move will create a work zone along the existing I-83 south shoulder, allowing crews to widen the southbound lanes.


Once that shift happens, southbound drivers will no longer have access to Lowther Street and should use Exit 42/Lemoyne.

More stoppages are planned during the overnight hours on May 27 and May 28 as well, PennDOT said.