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Asphalt Berms

These curbs made of a special hot mix asphaltic concrete consisting of mainly fines, or small pieces of aggregate, are positioned with traffic safety in mind. Often installed on roads lacking concrete curbs and gutters or an even edge, berms are not designed to be hit by tires or to carry constant water flow. Berms with rounded edges are usually installed by hand, and berms with uniform straight edges are usually installed by machine. Since berms cannot be properly compacted due to their shape, they are often subject to cracking, sagging, and limited damage from tires.