Residential Area 7 & Arterial Zone 5 Road Maintenance Project 

OE provided design, construction management and inspection services to the City of Diamond Bar's Area 7 and Arterial Zone 5 Road Maintenance Project. The limits of this project included a total of 19.5 centerline miles of residential, collector and arterial streets within the city. The scope of work included rehabilitation of the roadway using primarily slurry seal and chip seal methods. In areas of extreme degradation, an asphalt overlay or full width grind and replacement was recommended depending on funding availability. To provide a complete and accurate design, OE individually walked each proposed roadway to note necessary localized AC removal and replacement patches, damaged curb & gutter and uplifted or non-ADA compliant sidewalks. Our comprehensive field survey included correlating work items with site photographs to ensure the full scope of work was identified. OE recommended the best total rehabilitation method based on existing field conditions and available project budget.