In the summer of 2015, PennDOT completed construction of the I-83 / PA 581 Interchange Bottleneck Safety Project. This early action project addressed safety and congestion issues at the I-83/PA 581 interchange, commonly known as the York Split, where I-83 northbound traffic had previously been reduced to a single lane, creating lengthy queues and delays for commuters. Project improvements included the addition of a second northbound lane through the interchange and an extension of the auxiliary lane across the John Harris Bridge to the 2nd Street interchange in Harrisburg. Other improvements modified, relocated or eliminated ramp movements within the project corridor improving traffic flow by eliminating conflicts associated with traffic weaves and extending acceleration and deceleration lengths. Since completion of the project, commute times have been drastically reduced for northbound traffic.
As part of the nationwide economic stimulus program, PennDOT has resurfaced a two-mile section of I-83 from the I-81 Interchange to the Union Deposit Interchange. The work consisted of milling and resurfacing the northbound and southbound lanes of I-83 to improve the ride quality, and reconfiguration of the southbound off ramp at the US 22 interchange.