Transportation Improvement Program

The Transportation Improvement Program (TIP) is a comprehensive listing of all federal and state-funded transportation improvement projects in the HATS area over the next four years. The 2019-22 TIP was adopted by the Harrisburg Area Transportation Study in June 2018 and went into effect at the beginning of the Federal Fiscal Year in October 2018. The Air Quality Conformity Determination is the process that demonstrates proposed projects will not adversely impact air quality in the region.

The 2019-22 TIP documents, as amended, are available here:

The first public comment period for the 2019-22 TIP closed on June 7, 2018 and the second closed on June 29, 2018.

To see the TIP projects on a map of the Tri-County Region, click here.

Air Quality Conformity Analysis



The TIP project map application is a web-based GIS mapping application for Highway and Bridge projects on the Commonwealth's Twelve Year Transportation Program and Regional Transportation Improvement Programs (TIPs).

This application for use with Internet Explorer only and was created to allow access to map and other information regarding highway and bridge projects.

Using Internet Explorer, you may search for projects and/or bridges by address, planning partner, legislative district, County or by PennDOT engineering district.

Click here for TIP project map.

PennDOT One Map

The PennDOT One Map replaces the previous MPMS maps application and includes mapping for HOPs and environmental features.

  • TIP map: This map represents the Transportation Improvement Plan, the next four years of planned road and bridge work in the commonwealth. The starter map allows for the coordination of road and bridge work with other efforts such as utility coordination, highway occupancy permit coordination, as well as coordinating planning with local governments and planning agencies.

  • HOP map: This map represents Highway Occupancy Permits (HOPs) (Utility, Driveway and Miscellaneous). The permit information is extracted from PennDOT’s Electronic Permitting System (EPS). This map can be useful to locate on-going or closed permit work within the limits of a planned project as well as identify potentially responsible parties when there is a failure of the highway. Permits issued pre-EPS and not uploaded into EPS are not displayed.

  • Environmental Screening map: This map identifies the layers that are used during the preliminary engineering phase of the project delivery process to identify environmental considerations covered by the National Environmental Policy Act (NEPA). These data layers come courtesy of various university, state, and federal resource agencies.

Traffic Information Repository (TIRe)

TIRe is a web application for providing traffic count data and is designed to enable Internet users to view interactive maps of traffic counter site locations and traffic count information for roadways throughout the Commonwealth of Pennsylvania. Users will have access to all available raw hourly classification and volume data.  Additional resources, such as Functional Class, National Highway System (NHS), and traffic limits are available to assist you in planning.

TIRe also has a mobile version that is accessible through the same website. TIRe will automatically switch to the mobile version when it recognizes that it is being accessed through a mobile device. The mobile version has access to TMS Stations, PennDOT’s Roadway Management System (RMS) Administrative information, Highway Performance Monitoring System (HPMS) Samples, TMS Limit Seg as well as several base maps. If you have questions, feedback or suggestions, email