How were macadam roads were made

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asked Jan 5, 2017 137k views

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Soroush Rabiei · Answer 1 · 2017-01-11T19:17:02+0000

Macadam roads were made out of compacted subgrade of crushed granite or greestone designed to support the load, covered by a surface of light stone to absorb wear and tear and shed water to the drainage ditches.

How were macadam roads were made

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