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Custom fit steel inlet/catch basin risers are stronger, lighter, and much faster to install than conventional alternatives. Look at costs to raise Catch Basin/Inlet grates to grade by manually excavating the frame, resetting it and pouring concrete. Go over three Case Studies (WI DOT, NJ DOT, IL DOT) of Interstate paving projects using Catch Basin/Inlet Risers. Look at pros and cons of Steel vs. Cast Iron Catch Basin/Inlet Risers (customizability/fit, available riser heights, strength, weight, safety).