Description: This document is the Maintenance Quality Assurance Inspectors Rating Manual for the Missouri DOT. This manual contains an introduction that explains the Maintenance Quality Assurance program and the practice of field inspection. The inspection processes and the inspection forms are described, as well as the details concerning the features to be inspected. The details include the definitions of the field data items such as asphalt pavement, concrete pavement, drainage, and roadside. Also included are the types of condition states and definitions of all of the field data items. A complete list of performance indicators for each of the field data items are also included with the equipment list needed, and the sample inspection forms.