Rancho Mission Viejo/County of Orange Public Works/Caltrans– Ortega (SR-74) Highway Widening

GMU provided geotechnical design and construction services for widening of the 2-lane highway to 4-lanes, plus construction of a new 2-lane bridge over San Juan Creek. Our pavement engineering services included design of heavy conventional structural pavement sections based upon in-place falling weight deflectometer (FWD) testing, asphalt coring and sampling, laboratory testing, and engineering analysis. Coordination with multiple agencies was required, including Caltrans, the County of Orange, The City of San Juan Capistrano, and Santa Margarita Water District. GMU provided inspection and testing services for grading, paving, utility trench backfill, soil cement, concrete, rebar, and welding.