Abstract: A rail cap for spanning a gap between two longitudinally adjacent rail sections. The rail cap includes a downwardly opening channel member mountable over the top of the rail sections across the gap. A lower clamping member is insertable beneath each rail section and securable to the channel member. A lateral restraint is provided for preventing the channel from moving toward the inside of the track. A longitudinal restraint is provided which interacts with the channel member and the ends of the gap between the rail sections to prevent longitudinal movement of the rail cap. A guide block is provided along an outer leg of the channel member to guide an inner flange of a wheel away from an inner leg of the channel member.