Public Works Construction & Infrastructure Improvements
Delivering ADA improvements, utility construction, drainage systems, site development, and civil infrastructure projects for public agencies throughout Northern California.
Since 2017, KEREX Engineering has successfully completed public works projects for cities, counties, school districts, sanitary districts, and public agencies across the Bay Area and Northern California.
40+
Projects Completed
20+
Public Agencies Served
Projects Up to
$4.6M
Proven Public Agency Experience
KEREX Engineering is a public works and civil infrastructure contractor specializing in the construction and improvement of essential community infrastructure.
Our experience includes projects ranging from ADA accessibility upgrades and utility replacement to drainage systems, roadway improvements, parks, schools, and site development.
Core Services
ADA Improvements & Accessibility Upgrades
Sidewalk & Streetscape Construction
Storm Drain Systems
Utility Installation & Replacement
Sewer Rehabilitation
Park Improvements
School Site Development
Traffic & Safety Improvements
Concrete & Asphalt Construction
Civil Site Infrastructure
Featured Projects
Sutter Avenue Urban Greening Phase 1
City of San Pablo
Construction of storm drainage improvements, bioretention systems, ADA-compliant sidewalks and curb ramps, pavement restoration, utility improvements, and streetscape enhancements.
Final Contract Value: $4.6 Million
Taylor Boulevard Improvements Project
City of Pleasant Hill
Construction of traffic signal improvements, ADA sidewalks and curb ramps, pavement rehabilitation, landscaping, irrigation, signage, striping, and roadway improvements.
Contract Value: $1.8 Million
Cedar Street Utility Replacement
City of Calistoga
Replacement of water mains, sewer mains, laterals, utility services, roadway reconstruction, and pavement restoration.
Contract Value: $1.8 Million
Countywide Curb Ramp Project
Contra Costa County
Installation of ADA-compliant curb ramps at multiple locations throughout Contra Costa County.
Contract Value: $1.9 Million
Gregory Gardens Storm Drain Rehabilitation
City of Pleasant Hill
Storm drain rehabilitation and infrastructure improvements supporting long-term system reliability.
Final Contract Value: $1.36 Million
South Laurel Employee Parking Lot LID Project
City of San Carlos
Construction of bioretention areas, storm drain infrastructure, irrigation systems, landscaping, curbs, drainage structures, and utility connections as part of the City's Low Impact Development (LID) stormwater improvement program.
Contract Value: $301,000
Agencies Served
KEREX Engineering has successfully completed projects for a diverse range of public agencies, municipalities, and districts throughout Northern California.
City of Concord
City of Vallejo
City of Fairfield
City of Benicia
City of Pleasant Hill
City of Walnut Creek
City of Napa
City of Hayward
City of San Pablo
City of Vacaville
City of Lafayette
City of Rio Vista
City of Milpitas
Contra Costa County
County of Sacramento
East Bay Regional Park District
Mount View Sanitary District
San Ramon Valley Unified School District
River Delta Unified School District
Lafayette School District
South San Francisco Unified School District
Built on Engineering Expertise
Successful public works projects require more than construction experience. They require a thorough understanding of infrastructure systems, project coordination, agency requirements, and long-term performance.
KEREX Engineering combines engineering knowledge with hands-on construction expertise to successfully deliver projects that improve transportation, accessibility, utilities, drainage, and public spaces throughout Northern California.
Leadership
Patrick Madden
Principal Owner
Patrick Madden is a civil engineer with nearly 20 years of experience in infrastructure, utility, roadway, and public works construction. Prior to founding KEREX Engineering in 2017, Patrick worked in road design, cost engineering, and pipeline construction, building a diverse background in both engineering and project delivery.
Today, he leads KEREX Engineering's work with cities, counties, school districts, and public agencies throughout Northern California, delivering projects that include ADA improvements, utility infrastructure, drainage systems, roadway improvements, and site development.
Why Agencies Choose KEREX ENGINEERING
COLLABORATIVE APPROACH
Experienced working alongside agency staff, engineers, inspectors, consultants, and stakeholders to keep projects moving efficiently.
PUBLIC WORKS EXPERIENCE
Extensive experience delivering projects for municipalities, counties, school districts, utility districts, and public agencies.
INFRASTRUCTURE EXPERTISE
Strong capabilities in ADA improvements, drainage systems, utility construction, site development, and roadway infrastructure.
RELIABLE PROJECT DELIVERY
A proven track record of successfully completing public works projects across a wide range of scopes and contract values.
Let's Discuss Your Next Project
Whether you're planning utility improvements, ADA upgrades, drainage systems, roadway enhancements, site development, or other public infrastructure projects, we'd welcome the opportunity to discuss how KEREX Engineering can help.
KEREX Engineering
Public Works & Civil Infrastructure Contractor
Phone: (925) 746-7145
Email: patrick@kerexengineering.com
License Number: 1002913
Service Area: Northern California