Highway / Roadway Engineering

TNH has become a recognized leader in the development and implementation of cost effective and innovative transportation designs in Alaska. This recognition is the direct result of sound facility planning, design and construction in the most extreme conditions on earth. Our projects have had to consider unique site conditions; such as temperature extremes (-80 to 140 degrees Fahrenheit), permafrost, unstable soils, and site seismicity.

As Alaska as grown, TNH has planned and designed roadways, streets, and highways to meet today’s needs while preparing for the future. We maintain long-standing relationships with federal, state and municipal transportation agencies providing all aspects of project development from initial design to construction project management.