110 Local Road Management Manual Table 4.2 Common Surface Treatment Options for Local Asphalt Pavement Roads Recommended Scope of Work per Road Treatment/ Condition Good Fair Poor  Note: Regardless of road condition, gravel pavement is not adequate to support current and projected traffic volume (AADT is higher than 400 vehicles)  Scope of Work: Road o Replacement of gravel pavement into asphalt Upgrading pavement or PCCP or ACP o Work items in road improvement: Road extension Road widening Geometric design improvement New, major, raising or expanding earthworks  Scope of Work: New Road o Opening and Construction of new road including Construction all road sections and elements  AADT is less than 400 vehicles per day Bituminous prime or tack coat (asphalt overlay) of entire/ whole section Rehabilitation Not applicable Not applicable Restoration of deteriorated embankment Replacement of deteriorated drainage