Client. Community. Our People.

Mark Thomas provides civil and structural engineering, construction management, land surveying, landscape architecture, planning, and grant writing services. A California-focused firm, we are dedicated to improving how we all move through our communities. We are defined by our three focus areas:


We develop solution-oriented approaches & ideas that meet the goals and values of our clients.


We develop context-sensitive solutions to local challenges, integrating community feedback.

Our People

We provide a supportive environment that fosters teamwork & upward mobility.

From an express lane widening, interchange reconstruction, bridge replacement, bicycle trail, park and ride, storm damage repair, to a park, a Mark Thomas project is a project defined by its seamless design, quality craftsmanship, community focus and thoughtfulness towards the surrounding natural environment.

It’s not about simple connection, but creating a better way for all of us to Move Forward.

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Recent News

June 25, 2019 in Transportation

Mark Thomas Designs California’s First Diverging Diamond Interchange

The City of Manteca recently broke ground on construction of California’s first Diverging Diamond Interchange, at SR 120 and Union Road. The Diverging Diamond Interchange, commonly abbreviated DDI, is a…
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March 26, 2019 in Uncategorized

Julie Passalaqua Leads Interactive Mentorship Activity

Julie Passalacqua, Mark Thomas' Structures Division Manager, recently led a group of 10 young women  from the Sacramento chapter of Women’s Transportation Seminar (WTS) on a train trip to Rosie…
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October 1, 2018 in Promotions, Survey, Survey

Matt Stringer Promoted to Survey Division Manager

We're excited to announce that Matt Stringer, PLS, CFedS has been promoted to Survey Division Manager. Matt has been with Mark Thomas since 2005. In that time, he has managed…
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We are always looking for new team members that embody our core values of collaboration, creativity, flexibility, respect, fairness, transparency, accountability, and ownership.