working for our communities prioritizing our clients engineering for the future

Featured Projects

Our featured projects showcase some of our most challenging and impactful works throughout Alaska. Whether it’s transportation infrastructure, site development, or water resource management, we can deliver effective and sustainable solutions.

As you explore our work, you’ll see the depth of our expertise and commitment to excellence. We approach every project with a collaborative mindset and work to understand each clients’ challenges. We believe this approach is key to delivering successful outcomes that meet our clients’ goals.


Civil Engineering

HDL provides creative civil engineering solutions to tackle any project, whether it’s inspecting a bulk fuel tank farm or creating a park’s master plan. Read more about Civil Engineering

Transportation Engineering

HDL’s Transportation Engineers are the team of choice for state and local agencies to design roadway and highway projects in Alaska. Read more about Transportation Engineering

Aviation Engineering

HDL’s Aviation Engineers and Designers have worked on projects ranging from small general aviation airports to large hub airports. Read more about Aviation Engineering

Water and Wastewater Engineering

HDL’s Water and Wastewater Engineers provide services for rural utilities, regional water transmission mains, municipal water systems, roadway projects, water/wastewater distribution, collection, and treatment systems. Read more about Water and Wastewater Engineering

Geotechnical Engineering

HDL’s Geotechnical Services Group brings a wide range of expertise to assist clients with soil and groundwater challenges. Read more about Geotechnical Engineering

Environmental Services

Our Environmental Services Group has the expertise to aid in the National Environmental Policy Act (NEPA) process and development of NEPA documentation. Read more about Environmental Services

Surveying and Mapping

HDL offers in-house, state-of-the-art survey services to support our engineering services. Read more about Surveying and Mapping

Construction Administration and Testing

The HDL team provides construction services that meet safety and quality expectations, establish clear lines of communication, and stay on schedule/budget. Read more about Construction Administration and Testing

Hydrology and Hydraulics

HDL’s hydrologic and hydraulic engineers provide fish passage design, H&H analyses, flood control, erosion mitigation, and more. Read more about Hydrology and Hydraulics

Why Choose Us for Your Engineering Needs

Our People

At HDL, we offer more than just engineering services. We offer a team of versatile experts dedicated to providing responsive service to our clients. Our team of experts cares about your project, and we will work to ensure your satisfaction every step of the way.

Our Innovation

Innovation is at the heart of everything we do. We use cutting-edge technology and innovative techniques to deliver cost-effective results that exceed expectations. We use our intuition, creativity, and experience to find solutions to complex engineering challenges.

Our Values

Our core values are integral to our success. Integrity, teamwork, quality, respect, and positivity form the foundation of HDL. And we strive to embody these values in everything we do. Our team is committed to delivering quality engineering services with integrity.

Join Our Engineering Team

At HDL, we understand that our employees are at the heart of our success. As an Alaska engineering company, we offer a dynamic and flexible work environment.

Our commitment to our employees goes beyond offering competitive compensation and benefits. We prioritize providing a welcoming culture that values teamwork, creativity, and personal growth. And we believe in investing in our employees’ development and advancement within the company.

If you are looking for a fulfilling career in engineering, HDL is the place for you. Join us and help us shape a better future for Alaska.

Join Our Team
HDL Employee

Our History



The Beginning

Scott Hattenburg and Lorie Dilley had a vision to start their own engineering company. In 2000, they laid the groundwork for what would become Hattenburg & Dilley, LLC.



Opening Ours Doors

Hattenburg & Dilley officially opened for business in Anchorage and Palmer, Alaska, with a commitment to providing exceptional engineering services.



Welcoming a New Partner

In April 2002, Dennis Linnell joined the Hattenburg & Dilley team and became a partner in the firm. With Linnell's expertise and dedication, the company was renamed Hattenburg Dilley & Linnell, LLC.
Our Story