Founded in 1887, Teichert’s two main operating companies are Teichert Construction and Teichert Materials. Teichert Construction holds California State Contractor’s License #8, the oldest active license in California. Teichert Construction is a general contractor that builds the infrastructure people use each day, including hundreds of thousands of mile of roads and freeways, commercial and industrial sitework, parks, airports, and more. One advantage that Teichert Construction brings our customers is a full line of construction services. These include mass grading, asphalt paving, concrete paving, curbs and sidewalks and underground pipelines. We stay on the cutting edge, from training our employees to outfitting our construction equipment with the latest technology for greater job efficiency. Teichert Materials is one of the largest construction materials producers in the county. This includes; Teichert Aggregates, a rock, sand, gravel and asphaltic concrete producer. Teichert Materials makes the materials to build homes, schools, offices, roads, levees and other community projects. Since our business is dependent on the use of natural resources, we work closely with neighbors, environmental experts and public officials to design, reclaim and replenish the environment in which we work. This is our 'net-gain'​ approach to doing business

Stacy and Witbeck is one of the nation’s largest heavy civil contractors and a top builder of transit and transportation projects. We are recognized as a leader in managing and constructing complex projects while working collaboratively with project owners, designers, and stakeholders to successfully deliver projects. As experts in alternative project delivery methods, we have earned the reputation of being the “go-to” contractor for many agencies. Our talented workforce has experience in all aspects of construction including structures, track work, earthwork, utility work, systems, and systems integration. We take pride in our superior client service, consistent construction excellence, and responsiveness to community concerns. Our safe, prompt, efficient, and fair construction practices have made us a valued partner, contractor, and employer. As an employee-owned company, we are not only invested in the success of our projects, but also the success of our people.

DeSilva Gates Construction is an award-winning general engineering contractor that has been building large-scale infrastructure and residential projects in the San Francisco Bay Area since 1932. We specialize in civil engineering, grading, paving, and construction management, while owning and operating three hot-mix asphalt plants and operating one of the largest quarries in the San Francisco Bay Area. Large-scale construction projects require a diverse range of skills, knowledge, and expertise. With a stable workforce, modern fleet of equipment, stable materials supply, and a network of specialist contractors, DeSilva Gates can take your public and private construction project from planning to completion. We’ve managed some of the largest civil engineering, highway, and infrastructure projects in California, completing our projects on time and under budget with exceptional attention to detail. We also provide in-house environmental remediation services through our affiliated company, Pacific States Environmental Contractors, Inc. and trucking services through Double D Transportation.

We build to improve lives. Knowing that the work we do directly affects people, we commit to delivering a high quality end product with a collaborative construction process. The planning, collaboration, communication, and execution for each of our projects is focused on the success of the entire team, an approach that has earned us a network of excellent partners and a 93% client referral rate. Whether constructing office space, a laboratory, or a mission critical facility, we offer a practical approach built on a foundation of technical construction experience tailored to meet each project’s specific needs. Founded in 1992 and with offices in the Bay Area and Sacramento, California, XL is a contractor of choice for leading companies in technology, life sciences, healthcare, and education. XL is consistently ranked as one of the Best Places to Work by the San Francisco Business Times/Silicon Valley Business Journal and is a founding member of the United States Green Building Council (USGBC) Silicon Valley Chapter.

Mark Thomas is a company that is dedicated to improving how we all move through our world. From civil and structural engineering, land surveying, landscape architecture and urban design, 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. Visit us at markthomas.com and follow us on Twitter @markthomas_co to learn more about us.

For more than 125 years, Obayashi Corporation has delivered quality solutions to infrastructure challenges across the globe. Founded in 1892, Obayashi has left its mark in all corners of the world. We provide a full range of general contractor services in both public works and private sectors including: office buildings, residences, tunnels, highways, rail systems, bridges, artificial islands, airports and nuclear power plants. Other services include urban planning and architecture, real estate and property development, environmental, and waste services. Obayashi Corporation’s first introduction to the U.S. market was the Surfrider Hotel project in Hawaii (1967-69). Since then, Obayashi has added Building Construction, Heavy Civil Construction and Real Estate Management to its portfolio of services in the United States. In addition, Obayashi has merged several US/Canadian companies which expand our market throughout North America including Canada. North American Regional Headquarters was established in 2010 to administer the business operations of Obayashi Group in North America. Currently, the consolidated revenue generated by North American operations is over $2 billion. By combining technological expertise with local knowledge and state of the art capability, we are creating a synergy for expanding business throughout North America.