DeSilva Gates Construction is an award-winning general engineering contractor that has been building large-scale infrastructu ... re 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. read more