In the summer of 2002, under a new transparatation pooled fund study TPF-5(019), 12 full-scale lanes of pavements with various modified asphalts were constucted at the federal Highway Administration's (FHWA) Pavements Testing Facility (PTF) in virginia. The primary goal of the study is to use FHWA's two Accelerated Loading Facility (ALF) machines to validate and refine changes being proposed in the Superpave binder specification to properly grade modified binders. the study will also provide valuable data test new features of the Machanistic-Emperical Pavement Design Guiede as well as other pavements technologies. During the construction, all 12 lanes were instumented with strain gauges and differential survey plates. Pavement strain responses were measured after the contruction and during the course of ALF loading in the pavements fatigue tests. This paper presents an overview of the study, instrumentation, measured strain responses as well as the fatigue performance data obtained to date.