Residential Area 3 & Collector Street Rehabilitation Project

OE provided design engineering, construction management, and inspection services to the City of Diamond on the Residential Area 3 & Collector Street Rehabilitation Project. The project limits include 25 centerline miles of collector and residential streets bound by Pathfinder Road to the north and Tonner Canyon Road to the south. The project required rehabilitating the roadway utilizing AC dig-outs in extremely damaged areas and slurry seal/ chip seal on the remaining areas. The scope of work involved removing and replacing 28 ADA compliant curb ramps, removing existing depressed curb & ramp and constructing ADA compliant curb, gutter, and sidewalk, removing and replacing 580 SF of cross gutters, grinding and replacing the existing asphalt concrete pavement to a depth of 2”, and R&R 1,000 SF of existing asphalt concrete pavement to a depth of 6”. Furthermore, work also included cold milling the existing pavement with a variable depth of 0” to 1.5”, constructing asphalt concrete overlay, applying 50,300 SY of conventional chip seal, Type II slurry seal, adjusting 120 manhole frames and covers, and traffic striping and markings.