Who We Are
We are civil engineers who work largely on designing transportation infrastructures, that is, freeways and roadways. It is a field that requires a high degree of specialized knowledge about automobile and driver behaviors to design the safest and most efficient facilities for users. We bring value to our clients by helping them meet federal, state, and local regulatory requirements.
AYCE is fully dedicated to working with our partners and your team to bring you value-added engineering services. We take pride in our capabilities and accomplishments, and so will you.
PRINCIPALS
DAVID Y. WOO
PE, ENV SP
Mr. David Y. Woo, is a California licensed Professional Engineer with more than 35 years of experience in planning, design and construction management of freeway, interchange, and major corridor projects throughout Southern California. His technical expertise spans civil, structural, traffic, signals, and lighting engineering. David has managed complex, multi-agency efforts for Caltrans Districts 7, 8, and 12, as well as RCTC, SBCTA, OCTA, and LA Metro. He is widely known for his contractor-centric design philosophy—producing clear, buildable plans that minimize change orders, reduce construction risk, and support efficient field execution.
Before founding AYCE, Mr. Woo served in senior leadership positions at nationally recognized firms, including Vice President and Transportation Director at the Louis Berger Group (now WSP) and Transportation Department Manager at HNTB, Orange County Office, where he expanded regional operations and led major design-build initiatives. As President and Principal Engineer of AYCE, he provides hands-on technical direction, QA/QC oversight, and stakeholder coordination across all freeway and roadway projects. David’s pragmatic, detail-driven approach and strategic leadership ensure AYCE consistently delivers transportation infrastructure that is compliant, on schedule, and ready for construction.
KANDICE NGUYEN
PE
Ms. Kandice Nguyen, is a California licensed Professional Engineer with nearly 20 years of experience delivering planning, design and construction management of freeway managed lanes, interchange, and multimodal corridor roadway improvements throughout Southern California. She is recognized for her leadership on some of the region’s most complex Caltrans design-build projects and is known for her meticulous attention to detail, strong command of Caltrans design standards, and ability to drive high-quality, constructable solutions. At AYCE, she leads as principal engineer, providing geometric design, roadway modeling, ADA compliance, drainage improvements, staging and traffic handling, and full PS&E preparation for both Caltrans and local public works projects. Her portfolio includes more than 15 major freeway and arterial corridor assignments for Caltrans Districts 7, 8, and 12, RCTC, SBCTA, OCTA, LA Metro and local municipalities.
Ms. Nguyen excels in preparing geometric approval drawings (GADs), obtaining Design Standard Decision Document (DSDD) approvals for nonstandard features, and resolving multidisciplinary design issues across traffic, structures, drainage, electrical, and utilities. She proactively addresses field constraints through early utility coordination, constructability reviews, and close collaboration with contractors, enabling efficient delivery and reducing construction risk. Her hands-on engineering leadership is central to AYCE’s reputation for producing technically sound, cost-effective, and contractor-friendly roadway and freeway design packages.