Founded in 1978, American Highway Products Ltd. manufactures the highest quality manhole riser products, including the Pivoted Turnbuckle Manhole Riser, the most powerful expanding manhole riser available today. We also manufacture catch basin/inlet risers and a compression water/gas box riser. Our manhole safety ramp and safety ramp protect motorists during road construction projects. The Flex-O-Ring rubber adjusting ring reduces traffic vibration into the substructure and reduces infiltration. American Highway Products offers sealing products to stop rattling lids and seal them. We also have the I.D. Locator, which is used to locate utility lids when paving streets. The EZ-Lift is used to remove concealed pick hole utility lids safely and effortlessly.