Mr. Diaz has over 38 years of professional transportation, planning and engineering experience. His extensive expertise in highway, roadway, traffic, rail and transit engineering has resulted in his management of major highway and rail transit projects in Southern California. Mr. Diaz has conducted studies and prepared designs for numerous agencies including Caltrans, Metro, SCRRA, CPUC, County of Los Angeles and numerous local agencies as well as local railroads throughout California and Nevada. His experience includes the analysis and development of PS&E packages for highway, rail transit, and freight rail corridor projects. As a former Metrolink representative and on-call railroad consultant, his experience in coordination with the CPUC has led to more than 500 at-grade crossing and grade separations within the Metrolink systems. His diverse background and experience along with his strong ability in leading multilingual community outreach/consensus building efforts has resulted in his direct involvement in the analysis of train/vehicle/pedestrian circulation issues at rail/highway interfaces including interchanges, grade crossings and stations as well as quality of life projects associated with mitigating noise along rail corridors. Mr. Diaz is a Cal Poly Pomona faculty as well as youth minister/preacher known for his ability to work and communicate with bilingual communities of all ages on sensitive projects.
Mr. Itagaki has over 34 years of civil engineering experience as a Project Manager, Steven has worked on a variety of civil, highway, traffic, rail and transit engineering projects for client cities, outside agencies, private sectors, and California Department of Transportation (Caltrans). Steven has worked numerous traffic projects and has been responsible for managing and preparing plans, specifications and estimates for traffic signal, street lighting, signing, striping and traffic control projects utilizing AutoCAD with AutoTurn, MicroStation, and Lighting Programs AGI32 and Visual. His experience also includes traffic studies and reports utilizing the Highway Capacity Software (HCS), Intersection Capacity Utilization (ICU), Synchro, and SPEEDPLOT.
Mr. Salvatierra has over 20 years of civil engineering experience and has worked on a variety of Civil, Traffic, ITS and Rail engineering projects for client cities, outside agencies, and private sectors. Ivan is responsible for management of preparation for studies, reports, design plans, specifications and estimates. His multi-discipline expertise will bring background knowledge to any project from all aspects of design,coordination and construction.
Mr. Marciuska has over 38 years of professional engineering experience in the civil engineering profession. He has extensive experience in the design of streets and highways, drainage systems, bridges, culverts, public works facilities, institutional projects, signalization projects, geometric design, land development projects, subdivision mapping, construction surveys, construction engineering, and project management. He has prepared many plans, specifications, estimates, and studies for the County of San Bernardino, San Gabriel Valley cities, County of Los Angeles, County of Orange, and City of San Diego.
