Gwinco Construction & Eng., is a General Engineering Contractor and Union company established in 1997 with over 28 years of experience. We are a leader in our industry specializing in concrete storm drain structures, catch basin's, junction structures, channels, inverts, CDS structures, reinforced concrete pipe installation, underground wet utilities, concrete spillways, reinforced concrete trapezoidal channels, reinforced concrete boxes, rip-rap, manholes and various types of drainage.
We also offer utility locating services using a Vacmaster system.
We have completed numerous flood control projects in the most difficult conditions for public entities, sanitation districts, private developers, flood control districts and Caltrans.
Certified with the State of California as a small business and signatory with the Laborers, Carpenters, Cement Masons and Operators Unions.
Mission Statement
Our mission is to provide the highest level of quality construction & performance. To maintain the highest level of professionalism, integrity, honesty, fairness and efficiency.
To achieve customer satisfaction in all areas including timeliness and attention to detail.
