The STC is responsible for reviewing and approving Pennsylvania’s Twelve Year Program (TYP), which is the Commonwealth’s official transportation program. The TYP is a multimodal, fiscally-constrained program of transportation improvements spanning a 12-year period. Multimodal means that the TYP includes all travel modes, including highways, bridges, public transit, aviation, rail, and bicycle and pedestrian facilities. PA State Law, Act 120 of 1970, as amended, requires PennDOT to prepare, update and submit Pennsylvania’s TYP every two years to the STC. It is then sent to the Governor, the General Assembly and the Secretary of Transportation.
Review the 2019 TYP List of Projects as adopted 8/16/2018. The STC regularly updates the project listing at their quarterly meetings.
View the Twelve Year Program Process Interactive Infographic to learn how projects are planned and programmed.
The TYP includes all modes of transportation with major investments in aviation and rail. The TYP includes aviation projects to improve safety, operations, and upgrade facilities. Review the current aviation projects.
In addition to aviation investments, the TYP incorporates rail freight projects through the Rail Transportation Assistance Program (RTAP) and the Rail Freight Assistance Program (RFAP). Review the current rail projects.