Eliminate liability of crews in traffic and costly excavation, brick laying and cement needed to raise inlet grates on interstate and highways. Significantly shorten project time. Our riser heights start at ¾-in. rise, increase in ¼-in. increments and are made to your job specifications including inclined risers. Custom designs available to meet job specifications. Our inlet risers will save time, lower cost, eliminate traffic control and liability of manual adjustments.