Local Road Management Manual 120 3. Recommended Pavement Options for Local Roads The ideal surface pavement of a local road should be able to support the current and future traffic volume along the said road. The ability to support current and projected traffic load should be taken in the context of the design life of the subject roads. Table 4.4 shows the recommended pavement for local roads given the average daily traffic (ADT) of the subject roads, which is based on the DPWH Design Guidelines, Criteria and Standards. Average Daily Recommended Type of Surface Pavement Traffic 400 and below Single or Double Bituminous Surface Bituminous Macadam Pavement, Dense or 401 - 1,000 Open Graded Plant Mix Surface Course, Bitumi- nous Concrete Surface Course 1,000 – 2,000 Bituminous Concrete Surface Course More than 2,000 Bituminous Concrete Surface Course, Portland Cement Concrete Pavement Table 4.5 Recommended Total Minimum Gravel Thickness for Local Gravel Roads Average Daily Recommended Traffic (in both Sub-Grade Soil Classification Total Minimum directions) Thickness of Gravel (mm) A1, A2, A3 Soils or if CBR > 7 200 <200 A4, A5, A6, A7 Soils or if CBR is between 3 and 7 200 A1, A2, A3 Soils or if CBR > 7 200 >200 A4, A5, A6, A7 Soils or if CBR is between 250 3 and 7 Note: the minimum pavement thickness for local road with more than 400 ADT should conform to DPWH DO #11-Series of 2014.