Public Works General Contractor · San Diego County

Building San Diego's
public spaces since 2001.

Concrete, storm drain, streetscape, and park construction for over 20 public agencies across San Diego County — delivered on time, built to spec.

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CA License #792159 · Class A & B · DIR #1000004777

2001serving San Diego since
20+public agencies served
25+skilled field crew
A & Blicensed · #792159

What we build

Self-performed. Start to finish.

Our own crews — cement masons, carpenters, bricklayers, operating engineers — handle the work from clearing to closeout.

Finished sidewalk along a commercial street

Concrete & Sidewalks

Sidewalk construction and improvements, driveways, stamped and decorative concrete.

New curb and gutter

Curb & Gutter

New construction and replacement, tied into existing drainage and paving.

Reinforced concrete pipe staged for storm drain installation

Storm Drain & Culverts

RCP installation, culvert repair and replacement, headwalls, cleanouts, and BMPs.

Decorative paver crosswalk

Pavers & Decorative Work

Paver crossings, bricklaying, decorative aggregate, and streetscape finishes.

Park pathway and shade structure

Parks & ADA Improvements

Park improvements, pedestrian ramps, ADA-compliant paths of travel, bioswales.

Heavy equipment on a roadway project

Grading & Excavation

Clearing and grubbing, demolition, excavation, grading, minor AC paving, traffic control.

Trusted by agencies across the county

County of San Diego Public Works City of San Diego City of Chula Vista City of Carlsbad City of Encinitas City of Poway City of Santee City of Escondido

Recent work

Featured public works projects

Storm drain and erosion control work

County of San Diego · 2021

Sweetwater Lane Park Trash Capture

Debris baffle box placement, 48" RCP storm drain installation, storm drain cleanouts, traffic control, and pavement restoration.

Decorative brick crosswalk under construction

City of Chula Vista · 2020

Third Ave Streetscape — Phase III

Roadway narrowing, raised medians, diagonal parking, and pedestrian crossings constructed with decorative pavers.

New sidewalk with decorative concrete border

City of National City · 2021

Roosevelt Smart Growth Corridor

Sidewalk, curb and gutter, decorative concrete, lighting, signage, mobility options, landscape and irrigation.

Also recently completed: countywide culvert repair & replacement (County of San Diego) and ADA improvements on Morning Sun Drive & Woodside Lane (City of Encinitas).

Crane setting precast concrete on a Tri-Group project

Who we are

Trust. Respect. Integrity.

Tri-Group has performed public works construction in San Diego County since August 2001. President Ghassan Assi brings 30+ years as a field superintendent; Vice President Hani Assi served as Project Manager and Chief Estimator for two decades, after nearly a decade as a Resident Engineer for the City of San Diego.

Behind them: a field crew of 25+ — many with Tri-Group since the early years — and an office of estimators, project managers, coordinators, and labor compliance officers. Every crew member is safety-trained and certified for their field tasks under our Injury & Illness Prevention Program.

  • Public works exclusively — we know agency requirements
  • Self-performing across trades, with trusted subs beyond our scope
  • Every project completed, on time — across 20+ agencies

Have a project going out to bid?

Add Tri-Group to your bidders list, or send us your plans for a competitive estimate.

Contact Our Estimating Team

Get in touch

Contact us

Phone(858) 689-0058

Emailinfo@trigroupinc.com

Office9580 Black Mountain Rd, Suite L
San Diego, CA 92126

HoursMonday–Friday, 8:00 am – 5:00 pm

Licensing CA Contractors License #792159 — Class A (General Engineering) & Class B (General Building)
Public Works Contractor Registration (DIR) #1000004777

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