The objectives of this project were to study the factors involved in bridge deck deterioration and to formulate and evaluate. techniques to prevent or halt such deterioration. Part II of this project was concerned with the evaluation of two types of bridge deck protective systems; waterproof membranes and latex modified Portland Cement concrete overlays. This report contains construction and electrical resistance data on nine different membrane systems applied to 35 structures. Also included is construction data on latex modified overlays applied to 5 structures. One of these structures is six years old and the results of the yearly bridge surveys are included.