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Laguna Treatment Plant

  In Santa Rosa, CA, as is true in many cities, it’s important to maintain and upgrade infrastructure to meet the demands of a growing city. One of these needed upgrades was the replacement of a nearly 25-year-old UV disinfection system at the Laguna Treatment Plant to provide a more sustainable and efficient system. The…

Cochran Basin Stormwater Conveyance

  Utility work is far from glamorous. Utility systems are regularly overlooked, possibly due to the contents of the pipes or the fact that it literally is underground and unseen. Though these systems rarely get the recognition they deserve, they are an integral part of…

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Tomochichi Federal Building – Savannah, GA

With a lineage that forges a path from the creation of our Union through some of the most significant events in our county’s heritage, Savannah, GA, has no shortage of historic and awe-inspiring buildings. This is why D.H. Charles Engineering was honored to work on…

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Gordie Howe International Bridge

As our northern neighbor, it should come as no surprise that Canada is one of the top trading partners with the United States. Over $664 BN of trade was conducted between Canada and the US in 2021, and nearly a quarter is moved on the…

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Purdy Creek Fish Barrier Removal

In the Pacific Northwest, management of natural resources, including the extensive network of streams and rivers, are of utmost concern. We rely on these resources for generating power, food, drinking water, and transportation of goods, and many local economies are dependent on their long-term sustainability.…

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International Women in Engineering Day

On this Women in Engineering Day, I have been reflecting on how I got to where I am. I found myself in the field of engineering with the help of parents who encouraged me and supported my curiosity about engineering. As a 5th grader I…

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Emergency Storm Drain Repair

  Before joining the team here at D.H. Charles Engineering, I had only briefly heard of excavation shoring. Dig a hole, install supports, and ensure that the walls of soil don’t cave in. Although that is technically true, it barely scratches the surface of just…

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Deception & Canoe Pass + San Rafael Bridge

Designing a suspended platform system presents unique challenges not commonly seen in other lines of engineering, which requires a different kind of in-depth plan behind each design. Like a well-constructed spider web, suspended platform systems typically consist of efficiently placed cables and chains working both…

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Willamette Water Supply Project

The Willamette Water Supply Project is a $1.6 billion water conveyance pipeline project in Oregon. Pipeline construction began in 2016, and when substantially complete in 2026, will provide fresh drinking water, capable of meeting current and future needs, while ensuring resiliency, protection of public health,…

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California High-Speed Train – Tule River Viaduct

DHC does not shy away from high profile projects, and in the state of California, High-Speed Rail is among the biggest and most anticipated projects the state has seen in decades. With the introduction of a high-speed rail system, the state could finally feel a…

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