Class A General Engineering · San Gabriel, California
Civil & Infrastructure
in San Gabriel
From sewer lateral replacements to full site grading, TDQ Construction provides the engineering-grade civil work required for San Gabriel properties. Licensed, bonded, and family-owned since 1987.
Core Capabilities
Infrastructure Services in San Gabriel
Sewer Lateral Replacement
Inspection and replacement of sewer lines in San Gabriel using both traditional and trenchless methods.
City Compliance GuaranteedUtility Trenching & Tie-ins
Full service trenching and connection for water, gas, and electrical lines, specifically for new builds and ADUs.
Class A ScopeSite Grading & Drainage
Precision grading and yard drainage systems to protect San Gabriel properties from water damage and soil movement.
Engineering GradeConcrete Infrastructure
Curb, gutter, and sidewalk repair or installation, as well as reinforced concrete pads for industrial use.
C-8 + Class AExecution
The TDQ Civil Workflow
Site Inspection
We perform camera inspections or site surveys to identify the exact needs of your San Gabriel infrastructure.
Engineering & Permitting
We coordinate with city engineers to ensure all utility and civil work meets local municipality codes.
Excavation & Prep
Safe excavation using specialized equipment, ensuring all existing underground lines are marked and protected.
Installation
Pipes are laid, utilities are connected, or grading is completed according to the engineered site plan.
Backfill & Compaction
Crucial step to prevent future settling; we use professional compaction equipment and proper backfill materials.
Final Certification
Passing all city inspections and providing you with the necessary compliance documentation for your records.
Knowledge Base
Civil Questions in San Gabriel
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Start Your San Gabriel Civil Project
TDQ Construction provides professional site assessments and civil engineering coordination for projects across San Gabriel.
Direct Line
(714) 357-1608
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