Longitudinal Cracking

Description

Cracks predominantly parallel to pavement centerline. Location within the lane (wheel path versus non-wheel path) is significant.

Severity levels

Low
A crack with a mean width ≤ 6 mm; or a sealed crack with sealant material in good condition and with a width that cannot be determined.

Moderate
Any crack with a mean width > 6 mm and ≤ 19 mm; or any crack with a mean width ≤ 19 mm and adjacent low severity random cracking.

High
Any crack with a mean width > 19 mm; or any crack with a mean width ≤ 19
mm and adjacent moderate to high severity random cracking.

How to Measure

Record separately:

4A. WHEEL PATH LONGITUDINAL CRACKING
Record the length in meters of longitudinal cracking within the defined wheel paths at each severity level. Record the length in meters of longitudinal cracking with sealant in good condition at each severity level. Note: Any wheel path longitudinal crack that has associated random cracking is rated as fatigue cracking. Any wheel path longitudinal crack that meanders and has a quantifiable area is rated as fatigue cracking.

4B. NON-WHEEL PATH LONGITUDINAL CRACKING
Record the length in meters of longitudinal cracking not located in the defined wheel paths at each severity level. Record the length in meters of longitudinal cracking with sealant in good condition at each severity level.