Heavy civil construction

Built for the work
that shapes the West.

More than 30 years of experience delivering site development, road construction, environmental restoration, and underground utilities.

Start a project View our work

30+years of
field experience

Interwest Pacific

Big capability.
Field-proven execution.

Interwest Pacific specializes in site development and heavy highway construction. Our experience spans public and private projects, from deep utility installations to roads, bridges, and box culverts.

What we do

Civil work, from the ground down.

All sizes and types of pipe, challenging depths, complex sites, and the structures that connect them.

Site Development

Mass grading, excavation, earthwork, preparation, and complete site infrastructure.

Road & Highway

Heavy civil road construction, subgrade preparation, aggregate placement, and related improvements.

Underground Utilities

Water, sanitary sewer, stormwater piping, and stormwater vault construction at virtually any depth.

Bridges & Structures

Experienced crews for bridges, box culverts, concrete structures, and coordinated civil work.

Environmental Restoration

Responsible construction and restoration work shaped around the conditions of each site.

Material Processing

On-site crushing, screening, handling, and placement supported by a capable equipment fleet.

Demolition

Building and site demolition performed with careful planning, capable equipment, and controlled execution.

Rip Rap

Rock placement for slope protection, drainage channels, erosion control, and heavy civil applications.

Solar Sites

Site preparation, grading, access roads, drainage, and civil infrastructure for solar energy projects.

Communications

Underground pathways and supporting civil infrastructure for communications networks and facilities.

Selected work

The proof is in the ground.

Interwest crews at work across earthmoving, material processing, roadway, and structural scopes.

Excavator and haul trucks working a large earthwork cut — EarthworkMass excavation & grading

Mobile crushing and screening equipment at a desert project — MaterialsOn-site crushing

Excavator feeding construction material processing equipment — ProcessingMaterial handling

Track loader installing a cellular confinement system — RoadworkCellular confinement

Roller compacting aggregate road base — Road constructionSubgrade preparation

Crew installing a metal structure in a concrete channel — StructuresConcrete & civil structures

Excavator performing controlled building demolition — DemolitionBuilding removal

Rock being placed for rip rap slope protection — Rip rapSlope protection

Solar arrays along a prepared access road — Solar sitesEnergy infrastructure

Abstract view of a high-capacity communications network — CommunicationsNetwork infrastructure

Safety in our work

Every task.
Every crew.
Every day.

As a valued member of the AGC Safety Team, Interwest maintains an adaptable safety program that prevents incidents and improves performance. Dedicated safety personnel and integrated training help every project move forward responsibly.

AGC

Safety-focused planning and field execution

Let’s build

Bring us your next project.

Tell us what you are planning. We’ll review the scope and connect with you about the next step.

Office: 533 2nd Street, Suite 280
Encinitas, CA 92024
Email: office@interwestpacific.com
Phone: 858-259-8082