Homeland Infrastructure Foundation Level Data HIFLDPrimary roads; January 1, 2024 Primary roads are generally divided, limited-access highways within the Federal interstate highway system or under state management. These highways are distinguished by the presence of interchanges and are accessible by ramps, and may include some toll highways. The Primary Roads shapefile contains all linear street features with MTFCC of S1100.FileengPennsylvania Spatial Data Access (PASDA)PublicPrimary Roads [Pennsylvania]DatasetsPennsylvania