The Conco Companies
| Company type | Private |
|---|---|
| Industry | Construction, Concrete services |
| Founded | 1959 |
| Founder | Matt Gonsalves, Gerald Santucci, Ray Santucci, Will Gonsalves, Mel Gonsalves |
| Headquarters | Concord, California , United States |
Area served | Western United States |
Key people | Steve Gonsalves (President and CEO), Matt Gonsalves (Chairman of the Board) |
| Products | Concrete services including design, formwork installation, reinforcement placement, shotcrete application, pumping services, finishing work, rebar fabrication, post-tensioning systems |
| Website | www |
The Conco Companies are providers of commercial concrete services based in Concord, California, operating from four regional offices throughout the Western United States, including locations in San Francisco, Los Angeles, San Jose, Sacramento, Seattle, Portland, Reno, Denver, and Colorado Springs. The company delivers a full spectrum of concrete solutions for public infrastructure, commercial developments, parking garages, educational institutions, and various other construction projects.
History
Established in 1959 by Matt Gonsalves, Gerald Santucci, Ray Santucci, Will Gonsalves, and Mel Gonsalves in California’s Bay Area, Conco has evolved into a prominent entity within the commercial concrete sector. Matt Gonsalves, one of the founders and former president, continues to serve as chairman of the board. He was instrumental in founding the Concrete Contractors Association and held the presidency of the Building Industry of America (BIA). In recognition of his contributions, he was inducted into the California Building Industry Foundation Hall of Fame in 2000.
Under the leadership of Steve Gonsalves, the current president and CEO, Conco has expanded its service offerings and geographic reach. His strategic vision has propelled business growth while fostering active participation in key industry groups such as the Building Industry of America, Concrete Contractors Association, Home Builders Association, Engineering & Utility Contractors Association, and American Concrete Pumping Association. Additionally, he holds positions on multiple nonprofit boards.
Range of services
Operating across the Western United States, Conco provides extensive concrete services including expert design for concrete structures, formwork installation, reinforcement placement, shotcrete application, pumping services, and finishing work. The company stands as one of the West Coast’s largest independent contractors specializing in reinforcing steel and post-tensioning systems. This capability is supported by sophisticated rebar fabrication plants located in Benicia, CA and Rochester, WA.
Since 1975, Conco has become a leading name in concrete pumping nationwide by tailoring solutions for complex construction challenges. To improve air quality at project sites, it was among the first to implement long boom pumps meeting current emissions requirements. These advanced pumps are deployed across Northern California, Southern California, and Washington State.
In addition to structural applications, Conco is innovating with sculpted shotcrete, utilizing concrete not only for its strength but also for aesthetic design purposes. Shotcrete presents a cost-efficient alternative to conventional cast-in-place walls by minimizing labor demands and accelerating placement through pneumatic spraying techniques.
Notable projects
Conco’s extensive project portfolio highlights its technical expertise and significant presence in major construction initiatives throughout the Western U.S. On February 15, 2014, the company achieved a Guinness World Record by completing the largest continuous mat pour ever recorded—placing 82 million pounds of concrete over an 18½-hour period. This feat utilized 227 trucks alongside eighteen boom pumps for the foundation of the Wilshire Grand Center in downtown Los Angeles—a Turner Construction project set to be the tallest building west of the Mississippi River.
In 2013, Conco played a critical role supporting American Bridge/Fluor Enterprises JV during repairs on 32 anchor rods for San Francisco’s Bay Bridge eastern span. The repair strategy involved steel saddles combined with post-tensioned jacket walls to reinforce the bridge deck framing. Due to dense rebar congestion and limited access points, concrete was pumped vertically up to 250 feet into challenging areas.
Conco secured the concrete contract for the $1.2 billion Levi’s Stadium in Santa Clara—the home stadium for the San Francisco 49ers—in 2012. This project demanded more than 65,000 cubic yards of concrete covering slabs totaling over 2 million square feet. To adhere to strict timelines, operations were conducted simultaneously across four distinct zones focusing on foundation and deck pours. The stadium opened its doors in fall 2014 under Turner Construction management.
The company also contributed to constructing the Nokia Theater L.A. LIVE plus its adjacent parking structure in Los Angeles (opened 2007), part of AEG’s $2.5 billion development initiative. This two-level subterranean parking facility received an Excellence in Concrete Award from the American Concrete Institute – Southern California Chapter.
- Wilshire Grand Center, Los Angeles, CA
- Bay Bridge Repair, San Francisco, CA
- San Francisco 49ers Levi's Stadium, Santa Clara, CA
- 815 Pine St, Seattle, WA
- Los Angeles Hall of Justice, Los Angeles, CA
- Kaiser San Leandro Medical Center, San Leandro, CA
- UCSF Neurosciences Lab and Research Center, San Francisco, CA
- John Muir Medical Center Phase IV, Walnut Creek, CA
- Solyndra, Fremont, CA
- United Spiral Pipe, Pittsburgh, CA
- Napa Riverfront, Napa, CA
- Nokia Theater L.A. LIVE + Parking Structure, Los Angeles, CA
- Mineta Airport, San Jose, CA
- 717 9th Street, Los Angeles, CA
- Washington Square, Bellevue, WA
- The Ashton, Bellevue, WA
- Inland Empire Energy Center, Romoland, CA
- Island Market Square, Mercer Island, WA
- Caltrans District 7 Headquarters Replacement Building, Los Angeles, CA
Certifications
- CARB Certification
- Stud Rail Manufacturing
References
- About | ConcoNow.com accessed 2014-04-23
- http://www.mychf.org/go/hall-of-fame/past-honorees/gonsalves-matt/ accessed 2014-05-03
- http://www.conconow.com/concrete-construction-companies/leadership/ accessed 2014-05-03
- http://www.biconstructionnews.com/en_article_Los_Angeles__Guinness_World_Records_for_largest_continuous_Concrete_Pour.news accessed 2014-05-03
- http://www.putzmeisteramerica.com/news/job-stories/The-Grand-Pour accessed 2014-05-03
- Conco Plays a Major Role in Repair of the New Bay Bridge | InsideBayArea.com accessed 2014-04-23
- http://schwing.com/new-stadium-races-toward-super-bowl-50/ accessed 2014-05-03
- Providing Concrete Services for Entertainment Venues | ConcoNow.com accessed 2014-04-23
- http://www.conconow.com/projects/ accessed 2014-05-03