Golden Hill Road and Union Road Roundabout

City of Paso Robles
Paso Robles, California

Design Phase Testing and Inspection

The Golden Hill Road and Union Road Roundabout Project involved reconstruction of an existing stop-controlled intersection in Paso Robles, California. During the design phase of the project, Earth Systems performed subsurface exploration and laboratory testing to aid in the development of roadway reconstruction recommendations and provided consultation during discussions of project construction phasing and specification development.

A street crosswalk with part of the roundabout shown and a sidewalk surrounded by grass

Construction Phase

During the construction phase, the intersection reconstruction included pulverization, Full-Depth Reclamation with Cement (FDR-C), Class II aggregate base placement, minor concrete, HMA paving, and utility trench backfill. Earth Systems worked closely with the project owner, design team, construction management team and contractor during the construction phase of the project.

Golden Hill Road and Union Road Roundabout shown from an aerial angle with cars on the surrounding road and trees and grass on the side of the sidewalks

Compaction and Materials Testing

Our services consisted of compaction testing of sewer and water line backfill; observation and testing during FDR-C operations; inspection of HMA placement and associated materials testing; and compaction testing in areas where native soil and aggregate base required compaction.  As a result of the collaborative effort during design and construction, the projected construction timeline for the project was reduced by several months.