H&H’s long-standing mission is to provide exceptional infrastructure engineering services by applying proven solutions, innovation, and effective business management, creating value for each client and their communities. Clients around the world seek out H&H expertise to develop their infrastructure solutions and provide them with lasting solutions.

Roadways & Bridges

Highway and railway infrastructure, including roads, bridges and tunnels. H&H is internationally renowned in the field of bridge engineering. Additionally, our kinetic engineers are experts in all movable bridge types: bascule; swing; vertical lift; as well as exotic variations.

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Expertise in all disciplines pertaining to rail bridges, including structural, electrical, mechanical, and geotechnical; and in all phases of work, from planning and inspection/investigations through design and construction phase services. We also offer services such as value engineering, constructability review, forensic analysis, and asset management to our transit clients.

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Kinetic Systems

Our kinetic engineers are experts in the complex interfaces between structural, mechanical, and electrical systems of heavy movable structures, including: movable bridges, stadium roofs, locks, large retractable doors, moving entertainment and more.  Through our strategic partnership with Thornton Tomasetti, we are able to deliver complete building design and analysis solutions from the foundations on up.

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