Puget Sound Heavy Civil Contractor
Building Seattle's infrastructure since 1962
Self-performing 85–90% of our work. Delivering excellence for over half a century as one of the largest and most diversified contractors in the Puget Sound region.
- 60+
- Years in business
- 85–90%
- Work self-performed
- 1,000+
- Projects delivered
- 100%
- Locally owned
What We Build
Heavy civil capability, self-performed
From subgrade to final paving, our own crews and equipment carry the critical path — which means tighter quality control, fewer handoffs, and schedules we can stand behind.
Concrete & Paving
Concrete paving, curb ramps, sidewalk construction and full panel replacement built to City of Seattle and WSDOT standards.
Learn moreExcavation & Site Work
Mass excavation, grading and site preparation with geosynthetic reinforcement and erosion control on constrained urban sites.
Learn moreUnderground Utilities
Water mains, sanitary and storm sewer, conduits and drainage improvements installed in live traffic corridors.
Learn moreInfrastructure
Roadway and bridge construction, traffic signal rebuilds and habitat restoration for public agencies across the Puget Sound.
Learn moreGeneral Contracting
Full-service general contracting for public agencies and private owners — one accountable team from bid to closeout.
Learn more
Trusted by the region's largest owners
- City of Seattle
- Sea-Tac Airport
- Boeing
- King County
- Port of Seattle
- WSDOT
Client Feedback
What owners say
Merlino's crews kept a major arterial open to buses and businesses through an 18-month rebuild. Their planning is as strong as their field work.
Public Works Project Manager — Municipal Agency, King County They self-perform the critical work, which means schedule certainty. That matters more than anything else on an operating site.
Facilities Director — Private Industrial Client Complex utility work in a tight urban corridor, delivered without a single service interruption to our customers.
Utility Engineering Lead — Regional Water Utility
Ready to talk about your project?
Tell us the scope and schedule — we respond to quote requests within 24 hours.