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Business Details
28 Years
experience
Your Trusted Heavy Civil Construction Partner
Prospect Construction has established itself as a premier heavy civil contractor through decades of specialized expertise in complex infrastructure projects. Founded in 1998 in Puyallup, Washington, the company has grown from its origins in water and wastewater treatment plant construction to become a regional leader serving the Pacific Northwest. Our self-performance capabilities and commitment to the 'Partnering' approach ensure clients receive exceptional value through fair dealings with owners, engineers, subcontractors, and suppliers. With offices in Washington, Montana, and Wyoming, we deliver technical excellence across water/wastewater systems, civil infrastructure, and industrial projects while maintaining strict control over project risks. Our team's 40+ years of combined industry experience, including legacy ties to Venture Construction, positions us to tackle challenging projects requiring advanced shoring systems, major excavations, and process equipment installations.

We prioritize client success through ethical practices, transparent communication, and a workforce dedicated to continuous improvement. Our proven track record includes landmark projects like the Salmon Creek WWTP expansion and the Foothills Trail Bridge replacement, demonstrating our ability to execute technically demanding work while maintaining operational continuity for existing facilities. Community involvement remains central to our mission, with active participation in organizations like World Vision and Young Life reflecting our values-driven approach to construction services.
Services
Water/Wastewater Treatment Plants Civil Infrastructure Projects Industrial Construction Bridge Construction Utility Installations Site Development Structural Steel Installation Process Equipment Integration Shoring Systems Concrete Tank Construction
Details
  • Year established: 1998
Highlights and features
  • We offer 25+ years of specialized expertise in heavy civil construction projects
  • Our self-performance capabilities maintain strict quality control across all work phases
  • Regional presence with offices in Washington, Montana, and Wyoming ensures local knowledge
  • Proven track record with complex projects like the Salmon Creek WWTP expansion
  • Values-driven approach combines ethical practices with community involvement
What people say
Diligent contractor Perfect work Maintain schedule Under budget Ethical professionals
Services
Water/Wastewater Treatment Plants
Specialized construction and expansion of water and wastewater treatment plants requiring advanced process equipment integration. Our team executes complex projects while maintaining facility operations, as demonstrated in the Salmon Creek WWTP anaerobic digester installation and Gig Harbor WWTP capacity expansion. We handle all aspects from flow diversions to mechanical systems installation.
Civil Infrastructure Projects
Comprehensive civil construction services including bridges, roads, and utility systems. Successfully completed challenging projects like the Foothills Trail Bridge replacement and Illahee Springs subdivision development. Our expertise covers reinforced embankments, concrete structures, and site utilities installation across diverse terrain conditions.
Industrial Construction
Execution of complex industrial projects requiring specialized mechanical systems and piping installations. Proven capabilities in biogas treatment systems, hybrid battery lift installations, and process equipment integration. Our work on the West Point Biogas Project demonstrates expertise in emissions control systems and utility upgrades for industrial facilities.
Bridge Construction
Design-build and reconstruction services for pedestrian and vehicular bridges. Successfully completed the Foothills Trail Bridge steel arch replacement and Orville Road Bridge single-span conversion. Specialize in limited-access projects requiring innovative construction approaches and coordination with public stakeholders.
Utility Installations
Comprehensive utility installation services including water, sewer, and storm drainage systems. Demonstrated expertise in confined space installations like the Barton Pump Station odor control system and Ship Canal Pump Station rehabilitation. Capable of handling large-diameter piping up to 60 inches in complex urban environments.
People
Gordon McLaren
President
42-year industry veteran who founded Prospect Construction 22 years ago. Brings extensive leadership experience from Venture Construction legacy to drive strategic growth and operational excellence.
Sue Dunn
Office Manager
30-year industry professional with 22 years at Prospect Construction. Oversees administrative operations and office management with deep institutional knowledge of company processes.
Ryan Sondgroth
Chief Estimator
22-year construction industry veteran with 10 years at Prospect. Leads estimating team with expertise in complex project cost analysis and bid preparation for heavy civil projects.
Chris Janes
Senior Project Manager
22-year industry expert with 14 years at Prospect. Manages large-scale water/wastewater projects with focus on technical execution and client satisfaction across multiple regional offices.
Kelby Vaughan
Senior Project Manager
20-year construction professional with 8 years at Prospect. Specializes in project delivery for complex infrastructure projects, bringing bilingual capabilities and international experience to client engagements.
Questions
What geographic areas do you serve?
We operate across Washington, Montana, and Wyoming with regional offices in Puyallup, Missoula, and Sheridan.
What types of projects do you specialize in?
We focus on heavy civil construction including water/wastewater treatment plants, bridges, industrial facilities, and complex utility systems.
How do you handle complex project challenges?
Our self-performance capabilities and 'Partnering' approach ensure collaborative problem-solving with all stakeholders while maintaining strict quality control.
What safety certifications do you hold?
Our team maintains industry-standard safety certifications with a dedicated Safety Manager overseeing compliance across all projects.
Can you handle projects requiring specialized equipment?
Yes, we have experience with large-diameter piping (up to 60") and complex mechanical systems installation in confined spaces.
What community initiatives do you support?
We actively support organizations like World Vision, Young Life, and Rainier Scholars through volunteer work and charitable contributions.