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Structural improvement required <br />Roads show first signs of needing strengthening by overlay or recycling. They have very severe surface <br />ravelling which should no longer be sealed. Many longitudinal and transverse cracks are ravelling slightly. <br />Over 50% of the surface may have block cracking. Patches are in fair condition. They may have rutting <br />less than 1/2" deep or slight distortion. <br />Severe ravelling <br />Extreme loss of <br />aggregate <br />Transverse cracks <br />Open with slight crack ravelling <br />Longintudinal and block <br />cracking <br />Load related distress — <br />strengthening needed <br />30 <br />• <br />• <br />Page 63 <br />