highway design manual index 1 march 20 2020 a planting 901 2 retaining walls 210 5 aggradation aashto standards definition 806 2 policy on use of 82 3 aggregate base ...
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...Highway design manual index march a planting retaining walls aggradation aashto standards definition policy on use of aggregate base abandonment see engineering criteria water wells subbase abbreviations official names aggressive abrasion agreements acceleration lane drainage cooperative at rural intersections materials access control air pollution burning dust alignment existing rights new frontage roads financed by others airway general highways interchanges clearances submittal data openings financial responsibility expressways aesthetic factors in relation to median bridges protection channel accessibility requirements consistency horizontal controls curb ramps guidelines for coordination vertical driveways culverts provisions disabled persons refuge areas grade accident alley accretion alluvium acquisition alternatives culvert pipes partial aluminum pipe material and disposal sites adt aadt average daily traffic angle intersection contour grading slope rounding appraisal color sel...