A segmented flow path assembly and spline seals therefore are provided. A method for cooling a spline seal is also provided. In one exemplary aspect, a spline seal is provided that may be positioned at least in part in a groove defined by a first flowpath segment and at least in part in a oppositely facing groove defined by an adjacent flowpath segment. The spline seal may span the gap between the adjacent flowpath segments and provide sealing therefore. The spline seal includes features that allow a cooling flow to bypass the spline seal to cool the hot side of the seal as well as to meter the flow by the seal.