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About

MWH Companies

MWH Companies

Slayden Constructors, Inc.

Slayden is a leading Pacific Northwest general contractor, founded in 1984 and based in Stayton, OR. Ninety percent of its annual revenue is focused on water and wastewater facility upgrades, improvements, and expansions. Slayden forged a strong reputation within the region for executing large, complex projects on time and within budget. With 120 employees, (50 professional and administrative/70 craft), Slayden is a renowned alternative delivery contractor with 88% of annual revenues delivered through GC/CM (WA), CM/GC, or Progressive Design-Build.

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MWH Companies

Methuen Construction Co., Inc.

With over six decades of expertise in the field, Methuen Construction Company, Inc. stands as MWH’s Northeast subsidiary. Methuen is recognized as the most successful self-performing contractor in the industry and consistently strives to deliver innovative solutions to clients at the highest standard.

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Corporate Organizational Structure

MWH Corporate Org Structure Chart

Recent News

Highlights from the 2024 MWH Breckenridge Conference

The MWH Breckenridge Conference featured 13 insightful presentations, recognizing standout contributions in engineering, innovation, and project leadership. Two teams were selected to join Obayashi’s training program in Tokyo.

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Welcome to the New Phoenix Office

After a year of meticulous planning and excited anticipation, MWH’s Phoenix Team moved into their new office on June 1, 2023. Let’s take a look around!

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